12 Days of Christmas
529
99 Bottles of Beer
726
Abundant Numbers
670
Christmas Trees
893
Cubes
541
Diamonds
526
Divisors
858
Emirp Numbers
541
Emojify
311
Evil Numbers
901
Fizz Buzz
834
Happy Numbers
507
Intersection
631
Leap Years
753
Leyland Numbers
364
Look and Say
708
Lucky Tickets
460
Morse Decoder
390
Morse Encoder
335
Niven Numbers
779
Odious Numbers
942
Ordinal Numbers
649
Pangram Grep
598
Pascal’s Triangle
661
Pernicious Numbers
932
Poker
973
Prime Numbers
628
Recamán
713
Rock-paper-scissors-Spock-lizard
539
Roman to Arabic
260
Rule 110
606
Seven Segment
683
Spelling Numbers
716
Tongue-twisters
442
United States
196