12 Days of Christmas
488
99 Bottles of Beer
654
Abundant Numbers
609
Christmas Trees
800
Cubes
477
Diamonds
467
Divisors
780
Emirp Numbers
378
Emojify
278
Evil Numbers
818
Fizz Buzz
777
Happy Numbers
458
Intersection
526
Leap Years
696
Leyland Numbers
315
Look and Say
624
Lucky Tickets
388
Morse Decoder
333
Morse Encoder
289
Niven Numbers
711
Odious Numbers
858
Ordinal Numbers
563
Pangram Grep
526
Pascal’s Triangle
618
Pernicious Numbers
848
Poker
779
Prime Numbers
565
Recamán
640
Rock-paper-scissors-Spock-lizard
461
Roman to Arabic
239
Rule 110
536
Seven Segment
599
Spelling Numbers
606
Tongue-twisters
393
United States
179