12 Days of Christmas
396
99 Bottles of Beer
357
Abundant Numbers
543
Christmas Trees
662
Diamonds
199
Divisors
840
571
Emirp Numbers
220
Evil Numbers
338
Fibonacci
643
Fizz Buzz
393
429
690
433
706
726
700
470
598
440
589
575
570
453
425
644
561
705Kolakoski Sequence
254
Leap Years
473
Niven Numbers
519
Odious Numbers
338
Pangram Grep
402
Pernicious Numbers
196
Prime Numbers
441
473
444
SierpiΕski Triangle
122
Tongue-twisters
419
United States
96