12 Days of Christmas
331
99 Bottles of Beer
397
Abundant Numbers
393
Arithmetic Numbers
572
Arrows
328
Christmas Trees
355
Collatz
696
CSS Colors
117
Divisors
824
Fibonacci
440
Fizz Buzz
700
536
688
ISBN
527
549
Leap Years
579
Maze
166
Niven Numbers
707615394578703322284537
715411526
Niven Numbers (Long)
795678448657797439312610
780514639
Pangram Grep
431
Pernicious Numbers
357
Prime Numbers
278
871
Quine
606870
Rijndael S-box
141
Seven Segment
300
Sierpiński Triangle
416
Tongue-twisters
502
573
724391428
United States
179
π
286
√2
700