12 Days of Christmas
386
99 Bottles of Beer
351
Abundant Numbers
543
Christmas Trees
662
Diamonds
199
Divisors
840
571
Emirp Numbers
220
Evil Numbers
338
Fibonacci
643
Fizz Buzz
393429690470433706726700598440589575570453425644561705
Kolakoski Sequence
254
Leap Years
473
Niven Numbers
519
Odious Numbers
338
Pangram Grep
402
Pernicious Numbers
196
Prime Numbers
441
473444
Sierpiński Triangle
122
Tongue-twisters
419
United States
96