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13 August 2017

alone & unsupervised, Vleeptron Dude sings about el choo-choo tren marihuana por fumar / should I bring chocolates to the pretty young physician's assistant Tuesday?

Click to enlarge / clicko por mas grande

S.W.M.B.O. has left me alone and unsupervised, so this is what all youse Vleeptroids get. Okay I owe you a few True Answers to a couple of PizzaQs. I'll get around to it. I promise.

 TMI DEPARTMENT:

 A very nice pretty young Asian-American physician's assistant stuck her gloved finger up my butt a few weeks ago. Tuesday she's going to do it again! I can't wait! Should I bring her chocolates?
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12 August 2017

if you're in USA & you just see this eclipse on TV you are soooooo lame & pathetic / use correct eclipse glasses or you'll go blind / the Sun will go dark, day will turn to night / send me $$$$ or I will not turn the Sun back on







Reputable Vendors of Solar Filters & Viewers









Solar Filters and Viewers
Here you'll find lists of reputable manufacturers and authorized dealers of solar filters and viewers; these include companies with which members of the AAS Solar Eclipse Task Force have had prior (and positive!) experience as well as companies whose products have been certified safe by authorities we recognize and whose certification we have confirmed to be genuine. Your eyes are precious! You don't need astronomers to tell you that, but you do need astronomers to tell you where to get safe solar filters: from the companies listed on this page. To do otherwise is to take unnecessary risks. If a supplier isn't listed here, that doesn't mean its products are unsafe — only that we have no knowledge of them or that we haven't convinced ourselves they are safe. For more information see our Eye Safety pages.

"Eclipse Glasses" & Handheld Viewers

The following well-known telescope and solar-filter companies manufacture and/or sell eclipse glasses (sometimes called eclipse shades) and/or handheld solar viewers that have been verified by an accredited testing laboratory to meet the ISO 12312-2 international safety standard for such products. They are listed in alphabetical order; those with an asterisk (*) are based outside the United States.

Solar Viewer Brands

Note: Baader Planetarium's AstroSolar Safety Film and AstroSolar Photo Film, sold in the U.S. by Alpine Astronomical and Astro-Physics (see below), are not certified to meet the ISO 12312-2 international safety standard and are not designed to work as eclipse shades or handheld solar filters. Baader's AstroSolar Silver/Gold Film, on the other hand, does meet the ISO 12312-2 safety standard for filters for eyes-only direct viewing of the Sun.
Numerous other astronomy- and science-related enterprises and organizations sell eclipse glasses made by the companies listed above. If you buy from any of these businesses, you know you are getting ISO-compliant safe solar viewers.

Astronomy, Science & Optics Vendors

Some (not all) locations in the following retail chains sell ISO-compliant safe eclipse glasses and/or handheld viewers made by the companies listed at the top of this page, so you can confidently buy solar viewers if you find them in their stores — but not on their websites, as some chains use different suppliers for their websites than they do for their stores. Links are provided only to help you locate the retail store nearest you.

Retail Chains

Here are some additional sellers of ISO-compliant safe solar viewers made by the companies listed at the top of this page. Some of these have storefronts on Amazon.com, where there are also numerous sellers of solar viewers that we have not been able to confirm are safe (though Amazon appears to be making a good-faith effort to remove such vendors and products from its website). We recommend that you buy only from companies listed on this page, and only products made by one of the companies listed above under Solar Viewer Brands.

Online & Other Vendors

FREE eclipse glasses from libraries: With support from NASA, Google, and the Gordon and Betty Moore Foundation, the Space Science Institute's STAR_Net initiative has distributed more than 2 million ISO-compliant safe solar eclipse glasses to more than 6,900 libraries all across the U.S. To find out which libraries near you are holding eclipse-related events and distributing free eclipse glasses, see the library map on the STAR_Net website.
FREE eclipse glasses from NASA: With safety as its top priority, NASA has distributed more than 1.5 million ISO-compliant safe solar eclipse glasses to its officially designated viewing locations around the country, including sites of high-altitude balloon launches and Citizen CATE observations. See NASA's event map for viewing locations near you.
FREE eclipse glasses from Astronomers Without Borders: The August 21st eclipse will be visible throughout the U.S., but many schools and other organizations in underserved communities and remote areas can't afford to purchase safe eclipse glasses. Astronomers Without Borders is giving away ISO-compliant safe solar eclipse glasses to needy groups willing and able to pay the cost of shipping and seeks donations to offset the cost of the glasses.
Other sources: What if you received eclipse glasses or a handheld solar viewer from a relative, friend, neighbor, or acquaintance? If that person is an amateur or professional astronomer — and astronomers have been handing out eclipse viewers like Halloween candy lately — they're almost certainly ISO-compliant, because astronomers get their solar filters from sources they know and trust (in other words, from the ones listed on this page). Ditto for professional astronomical organizations (including college and university physics and astronomy departments) and amateur-astronomy clubs.
If you bought or were given eclipse viewers at a science museum or planetarium, or at an astronomy trade show, again you're almost certainly in possession of ISO-compliant filters. As long as you can trace your filters to a reputable vendor or other reliable source, and as long as they have the ISO logo and a statement attesting to their ISO 12312-2 compliance, you should have nothing to worry about. What you absolutely should not do is search for eclipse glasses on the internet and buy whatever pops up in the ads or search results. Buy from one of sources listed here instead.
Be sure to read our safety tips before using "eclipse glasses" or handheld viewers, and see "How to Tell If Your Eclipse Glasses or Handheld Solar Viewers Are Safe" for additional important information.

Solar Filters for Telescopes, Binoculars & Camera Lenses

Solar filters for optics are meant to go over the aperture, i.e., the front opening, and should be used only by experienced observers. Four of the sources listed below — Alpine Astronomical, Astro-Physics, Baader Planeterium, and Kendrick Astro Instruments — sell aperture filters made from Baader AstroSolar Safety Film. While this material, unlike the newer AstroSolar Silver/Gold Film (see above), does not meet the ISO 12312-2 international safety standard for eyes-only direct viewing of the Sun — it transmits slightly more ultraviolet light than the standard allows — it has been safely used by amateur and professional astronomers for several decades for observing and/or imaging the Sun through telescopes, binoculars, and camera lenses (whose glass elements filter out the excess ultraviolet light).
Many of the astronomy- and science-related enterprises and organizations listed above, as well as others that advertise in magazines such as Astronomy and Sky & Telescope, sell aperture solar filters from one or more of the manufacturers named here. As long as you know what brand you're getting and that brand is listed on this page, you should be OK. Warning: Solar filters designed to thread into an eyepiece at the back end of the telescope, where you put your eye, are dangerous; sunlight concentrated by your optics could destroy it and injure your eye in a flash — literally. If you have such a filter, discard it. We'll say it again: a solar filter must be attached to the front of your telescope, binoculars, or camera lens.
To find telescopes and binoculars specially made for observing the Sun, see the Special-Purpose Solar Binoculars & Telescopes section of our Telescopes & Binoculars page.
Be sure to read our safety tips before using solar filters with any optical device!

Solar Optical Projectors

The following devices are used for indirect solar observation. They use lenses and mirrors to project an image of the Sun onto a white surface. In other words, you don't look through them — you look at them.
Be sure to read our safety tips before using a solar optical projector!
Posted by at 2 comments:

Step 1: Change gender. Step 2: Change faiths. Step 3. Fly to India. Step 4. Start dating local guys.


Click brides to enlarge.

fenil chohan has left a new comment on your post "It's عيد الفطر Eid al-Fitr, and Vleeptron wishes e...":

A wardrobe with the best ethnic collection is important to every Indian woman. She would definitely love to own everything that is new and trendy. We Have Some For You In Your Budget For more…
Plz visit:- Bridal Dresses

Posted by fenil chohan to Vleeptron_Z at Saturday, 12 August, 2017 

=============

ADDENDUM: The middle bride, that's not a tatt on her forearm, it's a design painted in henna.
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06 August 2017

Vleeptron Dude loves & recommends all thujone beverages / always have fire extinguisher at Absinthe party


Click to enlarge, hold hand in candle flame, slice off your ear.

THIS is the thujone molecule in 3D. The balls are element atoms; the sticks are electric bonds. You can orient the molecule any way you like with your cursor. The 3D wiggle molecule is from a collection at St. Olaf College in Northfield, Minnesota USA.

Thujone's chemical formula is
 
C10H16O

so you can figure out which balls are atoms of which element.

Vleeptron dedicates this post to Dr. Archie Lucas, my high school chemistry teacher.
 
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20 July 2017

the old Suisse Tourist who set off the HAZMAT alarms in Honduras / a suvenir Snowglobe from Hell / Death looms for Grampa in the Hot Garage, but he's left his young loved ones all his Nifty Hot Stuff


Click Click Click to enlarge.

Vleeptron awards this medal to every member of the Afficianodos who have visited Chernobyl. (So far nobody's made it to or near Fukushima.) We've sent 2 Intrepid Explorers to get in the Kiev van and a local woman drove them to allowable zones in the Chernobyl complex (until the wearable rad monitors started to click bricks frantically, then Ludmilla pushes you back in the van, We're Out of Here Now).

**********************************
an e-List e-mail:
**********************************

Not sure if this is a good place for this discussion. G**, if you disagree, go ahead and delete.

I am going through setting up a will, and such papers and deciding what to do if I become incapacitated or die, so as not to be a burden on my offspring.

(Not that I'm planning to any time soon. . .)

But that brought up what to do with my radioactive collection. I've asked the kids already and none of them are interested. Does anybody have any good ideas about what to do with a bunch of mixed radioactive materials in such a case?

I have a hundred or so radium clock hands, a dozen or so gas mantles, 

[the old Coleman camping lantern mantles were made of  thorium, it's enthusiastically radioactive, makes Geiger-Muller detectors go wild.]

and some pretty hot uraninite crystals, a couple of Fiesta ware plates, and a Fiesta ware salt and pepper shaker set.
 
The kids seriously don't want them.

I've thought that a couple of days before I die, I should put them in a cardboard box and try to drive into Mexico, but that presumes that I'll be capable of driving and making such decisions at that point. There are lots of ways of dying that preclude that option.

Does anybody have any better ideas?
Thanks!

H*****


+++++++++++++++++++++++++++
++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++

Hi H*****

I like your phrase "if I die." It gives me a little new hope that maybe I won't ever die.

Thanks for reminding me how old I am and what a Mess I really ought to simplify and maybe decontaminate or render more Planet-Friendly.

Driving the stuff through any/either border is a Real Bad Idea. About ten years ago a truckload of "pre-owned" steel pipe tried to enter the USA from Mexico. It was destined to be a new recreation yard in a USA public school. The kids never got the chance to climb on that special jungle gym.

ALL the Red Lights and Alarms started flashing. Assume your border crossing is equipped with radiation monitors as this US border crossing had been. At the very least, a few weeks of your Golden Years will be spent in government offices explaining your wonderful collection to various federal officials.

But in Mexico if you get jammed up, a generous donation to the local law enforcement fund will usually get you sped on your way. Never drive on highways at night. Leave A Comment if you know why.

Central American countries use a phrase "... like a Swiss tourist ..." to suggest that a good strategy is to act convincingly like someone from far away whose strange behavior is just the misunderstandings of a lost and ignorant fool in Bermuda shorts. (He actually speaks 3 languages fluently, but Español ain't one of them.)

How well the Swiss Tourist does in cases of radioactive sources I can't guess.

None of the kids wants this wonderful stuff? Are these your natural children, or from a different gene pool that lacks our interests and desires?

Bob
Massachusetts USA

P.S. I think Houdini had an arrangement with his wife that the one who went first would send back a sort of Postcard Message or Spiritual Tweet From Beyond. Also maybe a small souvenir if they have a gift shop at the entrance.
=========================

News, Global Warming, Mozart, Sports, Intergalactic Travel, sausages, VOLCANOS!!! opera, PIRATES!!! Filth in Extinct Lingos, Alternative Facts & Fake News, Big Integers & BOINC: http://VleeptronZ.blogspot.com/
Remarkable Older Stuph: http://Vleeptron.blogspot.com/

=========================
 
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08 July 2017

PIZZAQ! Before the Flying Saucer destroyed the Washington Monument and almost smooshed Little Bobby to peanut butter, how long does it take a besbol dropped from the top to hit the ground?



Click to enlarge. Flee for your life. 

 I was born and grew up in Washington DC USA. One summer day I visited the Washington Monument. Suddenly with no warning an evil, hostile Flying Saucer from Outer Space smashed into the Monument, and toppled it over. Dozens of tourists were smooshed to peanut butter; I barely escaped with my life. Other Saucers destroyed the U.S. Capitol.

This really happened; it's not Fake News. Anyone who says these images are really from the movie "Earth vs. the Flying Saucers" is probably a teenager in Macedonia with a laptop. In other news from Macedonian laptops, the USA Democratic Party is keeping children as sex slaves in a popular pizza restaurant in Washington DC.

Notice the height of the Monument. Every DC kid had to memorize this height for trig and physics class. PIZZAQ! If you drop a besbol from the top of the Washington Monument, how long does it take for the besbol to hit the ground? (Naturally you do this experiment in a vacuum.) (4 slices Chicago-style pizza with extra mozarella.)


Posted by at 5 comments:

07 July 2017

PIZZAQ: I was certain I saw a UFO. We weren't stoned, even though it was northern California in 1971.



Click to enlarge.

 A historical catalog of sighted varieties of Unidentified Flying Objects, mostlikely extraterrestrial (as opposed to secret Earth superpower experimental craft).

 Before calling all these sightings hogwash, I testify that in 1971, driving south on the Pacific Coast highway in northern California at night with other educated adult passengers, for 45 minutes we watched an aerial object zip around the sky at huge speeds, change shape and size rapidly -- for those 45 minutes we were all convinced that whether we liked it or not, the crazy thing was an extraterrestrial UFO.

 Well, it wasn't a UFO. PIZZAQ: If it wasn't from outer space, if it was an honest, natural Earth phenomenon, what was it? (Large with shallots & endives.)
Posted by at 4 comments:

04 July 2017

Foo Fighter: nice fuzzy bunny or genocidal freakazoid?



 Click to enlarge maybe. 

Plastic kit glue now contains nasty odor and you can't huff it anymore to get high or suppress appetite.

 Forwarded by my old Army buddy what resideth in the USA state shaped like the palm of a right-hand mitten. This UFO has many hostile anti-Earth characteristics. Hawking says we can only guess what real aliens will be like from the only actual example of sentient life we have encountered: Us. (We drop nuclear weapons on our human neighbors, and do genocide stuff. That's our only authentic example. We ain't bunnies.)

 The first UFOs human claim to have seen were called (by Allied pilots in World War 2) Foo Fighters. They'd whizz past and around and over and under our propeller planes as if we were standing still.

At bottom, a recent scrum of outer-space aliens (as opposed to illegal aliens) photographed at Ann Arbor, Michigan USA county fair.

Why do they fly 891.4 parsecs to look up our butts?
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29 June 2017

How will I know in thicket ahead is danger or treasure when Body my good bright dog is dead



Question
by May Swenson


Body my house
my horse my hound  
what will I do
when you are fallen

Where will I sleep  
How will I ride  
What will I hunt

Where can I go
without my mount  
all eager and quick  
How will I know  
in thicket ahead
is danger or treasure  
when Body my good  
bright dog is dead

How will it be
to lie in the sky
without roof or door  
and wind for an eye

With cloud for shift  
how will I hide?



May Swenson, “Question” from Nature: Poems Old and New. Copyright © 1994 by May Swenson. Reprinted with the permission of Houghton Mifflin Company. All rights reserved.
Source: Nature: Poems Old and New (Houghton Mifflin Harcourt, 1994)
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17 June 2017

Look to the skies!



Click to enlarge.

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15 June 2017

a bit late, but Vleeptron wishes all Ramadan Kareem

Please click to enlarge.

I ask the world to pardon me for being a week late to celebrate the holy month Ramadan.

This time it wasn't my Despair at the vile cloud of hate and violence that has darkened our human world for years. (But I certainly haven't found a cure, or a pill, for the Despair caused by this never-ending 9th Crusade.)

I'm told Roman Catholics have one Unforgiveable Sin: Despair. Because it is an insult to God to lose hope that no matter how horrible the world is, God will not help us fix it.

Much less profound. I was laid up with a minor stupid unserious disease. All I could do was shriek with pain. This dumb illness has, thankfully, subsided.

Now I can get to Vleeptron's wishes for all my neighbors on Earth for Ramadan Kareem -- a Generous month of Ramadan, in which Allah spoke the Arabic words that Muhammed wrote down as the Quran.

(No, my Arabic is almost non-existent, I read an English translation of the Quran published by Penguin -- some say it's the most read Quran translation on Earth. Vleeptron would be deeply grateful if readers -- particularly readers knowledgeable in these matters -- would comment on or critique the Penguin translation.)

Generous ... as Muslims celebrate this holy month, they take upon themselves the obligation of being generous to the poor, to those less fortunate. The greeting is simple: Ramadan Kareem. (Almost universally, the reply is a smile, a brightened face.)

Now I will stumble into controversy. My ignorant controversy, but at least I will try to keep it as short as I can.

Some of the Earth Cloud of Hate and Violence can be traced to hostility between the two main branches of Islam, Shia and Sunni. Historically this ancient hostility dates to disagreement over which of the religious leaders who followed Muhammed now preach the true Islam.

I note only the tens of thousands of men, children, women who have been killed and wounded over this difference. I pray somehow Shia and Sunni will follow Islam exclusively in neighborly peace and cooperation.

(Comments also welcome.)

For the first time in memory, Shia pilgrims celebrating Ramadan in Tehran -- Iran is the great world advocate of Shia -- were attacked and murdered. The suspects are Sunni terrorists.

I will go out on a theological limb here and declare: This is not the way to observe Ramadan.

Starting with 2 USA and NATO coalition wars, the 9th Crusade -- well, we try not to flash it all the time in big red neon, but these are the longest wars the USA has ever fought. Syria, Libya, Somalia, Afghanistan, Iraq, Yemen. I see no chance of the Long Wars ending or being politically or diplomatically settled. War without end, Amen.

Perhaps some reader can comment about a God who wants to be worshipped by never-ending wars, terror attacks, poison gas, barrel bombs. There might even be a big Greek word for this kind of God.

Dear readers, friends, neighbors -- Ramadan Kareem! At month's end, there will be great feasts and lots of candies and sweets. Worry, fear, grief will vanish, and then, in a decade or two, will fade and start to be forgotten. 

What do you remember about the Spanish-American War? Well, someday in the future, dream of a world that has forgotten today's long wars that were fought in God's name.

Vleeptron particularly wishes Ramadan Kareem to a brilliant and spiritually powerful friend, known to millions on the Internet, who is of Syrian and Palestinian ancestry. I wish all the torments of his family's land to cease -- without violence. (And I wish he could help me fix my mIRC, I downloaded the newest version and haven't been able to get back into IRC.)
Posted by at 2 comments:

26 April 2017

rare stamp from POSTES PATAPHYSIQUE

Cliquez pour le plus grande.

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25 April 2017

midnight appointment at Bahnhof Zoo / Top 5 Ways I grudgingly agree to die or perish / My Robot has no Soul


Fresh off the fire. Cheap. 

Professor Abel --


At school I studied Latin, so I could talk to Dead People and the Pope. I am good with languages, but I speak only the dialect eisenbahnwurstdeutsche. (This is sufficient for me to have many wonderful times in DE.)

Aber bitte was ist

Du bist der geliebte Mensch.

My dim acquaintance with deutsches, and my Robot, say:

You are the beloved person

... but my Robot has neither poetry nor familiarity with human meaning and social nuance.I am a Failed Poet, so I would say

You are beloved

or

You're a beloved guy

or maybe someone is trying to say

I like you a lot

But under what circumstances does a real deutschespracher say this? Is it an informal or sidewalk greeting, or is it a deeply felt expression of great love for the person to whom you say this?

Or is it famous from Literatur? If so, who wrote it?

Thank you for any nuance or context you can supply. My geliebte (danke fur diese Werde) Internet Relay Chat is kaput for the last year, IRC is where I go to ask Indo-European or Finno-Ugrik questions of nuance and context. You can get Icelandic questions answered in a minute on IRC, also Suomi is no problem.
In Berlin I make midnight pilgrimages to Bahnhof Zoo, they got hot Wurst, all varieties, 24/7. If we must all die, this is one of my Top 5 ways to go, I shall have died eating hot Wurst at Berlin Bahnhof Zoo at midnight. (Another on Top List is same sort of death, but at Plaza Garibaldi's 200 family food stalls in Mexico City -- also 24/7, free bonus mariachi bands.)
I am an amateur lurker on Coq-Club.

Yours,

Bob Merkin
 
Chesterfield Massachusetts USA

P.S. The Wassa -- unglaublich!

P.P.S. This is NOT a job inquiry -- but I can fantasize about being a CS lecturer for a few years in Gothenburg, where is the harm? Do you know what Queen Christina did to Descartes in Stokholm in February at 04:00 every morning? (Later she said she was sorry.)

----- Original Message -----
From: "Andreas Abel" <abela@chalmers.se>
To: "coq-club" <coq-club@inria.fr>
Sent: Tuesday, April 25, 2017 8:43 AM
Subject: [Coq-Club] Senior Lectureships in Computer Science at Chalmers and Gothenburg U

> We are hiring full-time permanent lecturers!
>
>
> http://www.chalmers.se/en/about-chalmers/vacancies/Pages/default.aspx?rmpage=job&rmjob=4987
>
>
> http://www.gu.se/english/about_the_university/job-opportunities/vacancies-details/?id=381
>
> The positions are focusing on teaching, but some time will be available
> for research as well.
>
> Excerpt from the description:
>
>   Major responsibilities
>
>   The scientific area is Computer Science, interpreted broadly. The
> position is a full-time tenured appointment with focus on education and
> pedagogical development.
>
>   You will teach a variety of topics in Computer Science; there may
> include courses such as programming, data structures, algorithms and
> databases. You will also supervise bachelor level projects and master’s
> theses. Besides teaching, you will keep up with the technical and
> pedagogical development in the areas of the position and introduce new
> methods in the curriculum.
>
>   As a faculty member you will share the responsibility of the
> administration and management of the department and the educational
> programmes.
>
>   You will collaborate with industrial, academic or governmental
> partners, and take part in the research conducted at the department. In
> addition, you are encouraged to apply for funding of further pedagogical
> advancement of our programmes, and for research funding.
>
>
> --
> Andreas Abel  <><      Du bist der geliebte Mensch.
>
> Department of Computer Science and Engineering
> Chalmers and Gothenburg University, Sweden

Posted by at 1 comment:

18 April 2017

CRUMMY OLD WINE DEPARTMENT: Faux Needlepoint Sampler next to inside of front door to remember all the stuff I need when I go out

....................... Click, maybe positive things happen.

I forgot all the work I'd put into this thing.

...."ye Deville makes work for idle hands."
 
It's in an old wooden frame hung on the wall next to my front door. The wallpaper is "Strawberry Thief" by the English designer and radical socialist William Morris. You can still buy William Morris wallpaper. If you hang it in your bedroom, it's the last thing you'll see before you fall asleep.

Winter is finally over (Thank God!!!), but this Sampler is Winter-specific. I don't need all these things in Spring and Summer. When I leave home in the morning in a hurry, at one time or another I've forgotten almost every one of these things, and later far from home it pisses me off that I don't have it. So this is a last-minute checklist. 

But it's disguised as a "God Bless Our Humble Home" wall sampler so it won't scream to visitors that an old forgetful feeb (who was always a bit absent-minded) lives here.

If you're curious about any item, Leave A Comment. (If I forget to bring a few of them, I could Drop Dead or wind up in the ER.)

Since my remarkably successful cataract surgeries, I don't need reading GLASSES anymore. And I just noticed that I don't take SMOX with me ... I must have designed this after I finally stopped smoking cigarettes!
Posted by at 2 comments:

12 April 2017

Menger Sponge / Cantor Dust




click to enlarge maybe








A212596         Number of cards required to build a Menger sponge of level n in origami.         1
 
    12, 192, 3456, 66048, 1296384, 25731072, 513048576, 10248388608, 204867108864, 4096536870912, 81924294967296, 1638434359738368, 32768274877906944, 655362199023255552, 13107217592186044416, 262144140737488355328, 5242881125899906842624
(list; graph; refs; listen; history; text; internal format)
   
 OFFSET    

0,1
    LINKS    

Table of n, a(n) for n=0..16.

CTRL Byte, 2010-04-13, Menger Sponge Construction

ELJJDX, Choux romanesco, vache qui rit et intégrales curvilignes, Am-stram-gram, ticket-ticket-bus-et-tram (French)

Nick Hamblet, Σidiot's Blog, 2009-03-01, Counting Cards

Michel Lucas, Défi 66 000 tickets (French)

Dr. Jeannine Mosely, The Institute For Figuring, Business Card Menger Sponge

Nicholas Rougeux, Mengermania, Instructions

Wikipedia, Menger sponge

Index entries for linear recurrences with constant coefficients, signature (28,-160).

    FORMULA    

a(n) = 4*(8^n + 2*20^n) = 2^(2*n+3)*5^n+2^(3*n+2).

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