12 Days of Christmas
486
99 Bottles of Beer
649
Abundant Numbers
607
Christmas Trees
796
Cubes
473
Diamonds
463
Divisors
776
Emirp Numbers
482
Emojify
275
Evil Numbers
812
Fizz Buzz
775
Happy Numbers
455
Intersection
526
Leap Years
691
Leyland Numbers
312
Look and Say
619
Lucky Tickets
385
Morse Decoder
334
Morse Encoder
287
Niven Numbers
705
Odious Numbers
851
Ordinal Numbers
563
Pangram Grep
524
Pascal’s Triangle
615
Pernicious Numbers
844
Poker
779
Prime Numbers
561
Recamán
632
Rock-paper-scissors-Spock-lizard
455
Roman to Arabic
238
Rule 110
530
Seven Segment
599
Spelling Numbers
603
Tongue-twisters
408
United States
172