12 Days of Christmas
325
99 Bottles of Beer
397
Abundant Numbers
393
Arithmetic Numbers
563
Arrows
326
Christmas Trees
355
Collatz
672
CSS Colors
117
Divisors
824
Fibonacci
441
Fizz Buzz
699
536
688
ISBN
528
549
Leap Years
579
Maze
164
Niven Numbers
708617394578703323285538
716412527
Niven Numbers (Long)
796679449657798439313611
780514640
Pangram Grep
431
Pernicious Numbers
357
Prime Numbers
278
871
Quine
607871
Rijndael S-box
141
Seven Segment
300
Sierpiński Triangle
416
Tongue-twisters
487
570
721388427
United States
178
π
286
√2
686