12 Days of Christmas
730
99 Bottles of Beer
694
Abundant Numbers
412
Arithmetic Numbers
676
Arrows
355
Christmas Trees
409
Collatz
833
CSS Colors
265
Divisors
890
Fibonacci
444
Fizz Buzz
707
588
692
ISBN
533
706
Leap Years
581
Maze
223
Niven Numbers
742634636586789332297551
722494534
Niven Numbers (Long)
820758700669831451329629
788531648
Pangram Grep
512
Pernicious Numbers
359
Prime Numbers
448
872
Quine
615875
Rijndael S-box
203
Seven Segment
418
Sierpiński Triangle
444
Tongue-twisters
758
778
754673770
United States
251
π
321
√2
707