12 Days of Christmas
336
99 Bottles of Beer
397
Abundant Numbers
395
Arithmetic Numbers
585
Arrows
328
Christmas Trees
356
Collatz
698
CSS Colors
117
Divisors
844
Fibonacci
444
Fizz Buzz
703
537
690
ISBN
531
551
Leap Years
580
Maze
165
Niven Numbers
714628634584720329293547
720420531
Niven Numbers (Long)
805693675666824448326625
786528646
Pangram Grep
434
Pernicious Numbers
359
Prime Numbers
432
872
Quine
615875
Rijndael S-box
145
Seven Segment
306
Sierpiński Triangle
420
Tongue-twisters
502
572
723398428
United States
179
π
287
√2
704