## 156829? Mass-market. Tacky.

Artisanal Integers - Summer of 2012. Suddenly several “integer-as-a-service-providers” spring from nowhere. They deliver “artisanal integers”. Integers which (they claim) are “hand-crafted and guaranteed to be unique and hella-beautiful”.
posted by Wolfdog on Feb 4, 2016 - 78 comments

## 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, ...

Fair sharing, the Thue-Morse sequence, infinitely long chess games, and related ideas. [A light, 10 minute video]
posted by Wolfdog on Jan 28, 2016 - 17 comments

## a(n)=a(n−1)+gcd(n,a(n−1)).

Go ahead: Press the button. A number is printed on the tape. Press again and another number appears. Keep going. A few more. Notice anything special about those numbers? The sequence begins: 5, 3, 11, 3, 23, 3, 47, 3, 5, 3, 101, 3, 7, 11, 3, 13, 233, 3, 467, 3, 5, 3, . . .
posted by Wolfdog on Sep 6, 2015 - 25 comments

## Y2GangnamStyle

PSY's 'Gangnam Style' has more views than YouTube can count
posted by mysticreferee on Dec 2, 2014 - 80 comments

The integers are a unique factorization domain, so we can’t tune pianos. That is the saddest thing I know about the integers.
posted by jenkinsEar on Dec 1, 2014 - 94 comments

## Significand of the figure

From the somewhat arbitrary and dimensionful to the timeless classic, one man's subjective list of notable properties of specific numbers.
posted by Talkie Toaster on Nov 8, 2012 - 39 comments

## Number A Day

NumberADay - Every working day, we post a number and offer a selection of that number’s properties.
posted by Wolfdog on Jan 11, 2012 - 30 comments

## Can you stump the Encyclopedia of Integer Sequences?

Can you stump the Encyclopedia of Integer Sequences? Every identifiable sequence known to man, including:

Name: Busy Beaver problem: maximal number of steps that an n-state Turing machine can make on an initially blank tape before eventually halting.
Comment: The sequence grows faster than any computable function of n, and so is non-computable.
Keywords: hard,huge,nice,nonn,bref

If your sequence does not appear there, you might want to try the Super Seeker.
posted by vacapinta on Apr 15, 2002 - 9 comments

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