99 Bottles of Beer
373
Abundant Numbers
543
Christmas Trees
681
Divisors
672
Emirp Numbers
436
Evil Numbers
523
Fibonacci
441520
494656
Fizz Buzz
611
Happy Numbers
351
Intersection
555
Kolakoski Sequence
488
Leap Years
571
Look and Say
447
Niven Numbers
588
Odious Numbers
521
Ordinal Numbers
480
Pangram Grep
Pascal’s Triangle
552
Pernicious Numbers
254
Poker
464
Prime Numbers
327
467490
Recamán
558
Rock-paper-scissors-Spock-lizard
535
Roman to Arabic
482
Seven Segment
271
Tongue-twisters
488
United States
224
Van Eck Sequence
528