12 Days of Christmas
821
99 Bottles of Beer
553
Abundant Numbers
526
Christmas Trees
642
Diamonds
193
Divisors
795
555
Emirp Numbers
339
Evil Numbers
324
Fibonacci
622
Fizz Buzz
385421675451416681706694584496580572619473466625533685
Kolakoski Sequence
238
Leap Years
466
Niven Numbers
508
Odious Numbers
325
Pangram Grep
385
Pernicious Numbers
191
Prime Numbers
416
448424
Sierpiński Triangle
87
Tongue-twisters
697
United States
94