25b324c077ed11d2e66c
“even faster” maze counter (which is actually slower)
2c9dc527d95357c5aa19
2ffc5ac49f3fa6476f40
9b02dd8ac8e9139286d0
Parabolic flow
Regex to test for divisibility by 11, in base 9
c763265cb1b90ddf9e72
Plouffe’s prime-generating constant
3×3 troll-square matrices with two-digit entries
Three-digit troll-square matrices
Two-digit troll-square matrices
See https://twitter.com/robinhouston/status/1297221537448198145
Search for English words that have a hex representation as a prime number
697f0701fc2d77444722
Assembler source code from https://www.pouet.net/prod.php?which=85227
95082374c4f20331f4cf
86631a1fbaa992840956
b317a2d0cceb780a56df
0bd2a04521333b0025c2
6ed23df94d0d671d6d52
f689a4b833dc027a3fd9
Sage code to find left-truncatable primes in bijective numeration
The left-truncatable primes in base 10 bijective numeration
86ae04ee1b3506a32003
ee107c3a848e162ba4c2
3ed08648e2e786196cb9
2dc1998deaf9f4d0cb3e
findBasis([a,b,c,d], 4, [a,b,e]) does not enclose e
Circles animated with WebGL
Matt Day’s in-place permutation algorithm using JavaScript generators
Clamp at each tick
Using transition.attr as usual
D3 circle transitions: longhand
Convert spreadsheet column letters (A,B, …, Z, AA, AB, …) to index numbers, and vice versa
(timer) Force layout issue with D3 v4.0.0 alpha.45
Force layout issue with D3 v4.0.0 alpha.45
D3 Custom Bundle
An axis with a date scale
A different Hilbert curve animation
A worm on a Hilbert curve
Hilbert curves
A Perl program using only the characters &+-.:<=>acemnorsuvwxz~ – see http://bumppo.net/lists/fun-with-perl/2001/01/msg00019.html
Testing Safari’s strange treatment of declared global variables
Cubes!
More Moiré
Moiré patterns
All the ways to make $39.75 from coins of denominations 1¢, 5¢, 10¢, 25¢, and $1
https://twitter.com/matlock/status/592308642948489216
Constant flux
50e5808cfe9212a18f29
A superpermutation on six symbols of length 872
Test case for Safari fullscreen bug
Interactive maze generator
FitzHugh-Nagomo maze generator
A reaction-diffusion simulation using WebGL
Worms 2
Ammonis worms up close and personal
Ammonis worms
Close-up of the chequered grid
Black and white and red all over
How to make a map of the world with D3
Another method for generating “all RGB” images
A 4096×4096 image containing each RGB value once (h/t allrgb.com). Z-order traversal of RGB cube mapped to z-order traversal of 4096×4096 square.
8217237
A brief explanation of the puzzling tweet https://twitter.com/robinhouston/status/381896698714669056
6634887
Solve a variant of the “Question 2” homework exercise from a previous iteration of the Coursera _Cryptography I_ course, proposed by Brian Meyer: https://class.coursera.org/crypto-008/forum/thread?thread_id=59#post-445
Compute the Bang Bang numbers
A family of equal-area projections
Flow experiment II
Experiments in flow
Double stumbling blocks
Stumbling blocks
Spiral triangles
Double Doyle spiral via Möbius transformation
Doyle spiral explorer
Doyle spiral circle packing
Algorithmic painting
Maze flood fill
Dudeney’s hinged triangle-square
Multiple sliders – Talkie demo
Slider – Talkie demo
Countdown – Talkie demo
Head & Shoulders
Simple color animation
4281738
1848764
Test case for throwing an exception in Java and catching it in C++
what happens when I run a script (bug in survey branch of whatdotheyknow-theme)
lvalue subroutine behaviour changes
A patch for pdftk 1.44 that fixes an infinite-loop bug
A Sleep sort implementation for http://visualsort.appspot.com/
Mergesort implementation for http://visualsort.appspot.com/
Signatures over time of http://epetitions.direct.gov.uk/petitions/2159
The number of perfect mazes on a 100×100 grid
A version of the algorithm that permits arbitrary clustering of crossings
874649
856316
When is an odd prime the sum of two squares?
Number of steps taken when switching from Aldous-Broder to Wilson's algorithm at different points
Make the maze demo from weblog.jamisbuck.org display correctly in IE
625130