12 Days of Christmas
486
99 Bottles of Beer
649
Abundant Numbers
607
Christmas Trees
798
Cubes
473
Diamonds
464
Divisors
778
Emirp Numbers
483
Emojify
277
Evil Numbers
814
Fizz Buzz
775
Happy Numbers
456
Intersection
526
Leap Years
692
Leyland Numbers
312
Look and Say
619
Lucky Tickets
385
Morse Decoder
334
Morse Encoder
287
Niven Numbers
706
Odious Numbers
853
Ordinal Numbers
563
Pangram Grep
524
Pascal’s Triangle
616
Pernicious Numbers
845
Poker
779
Prime Numbers
563
Recamán
637
Rock-paper-scissors-Spock-lizard
459
Roman to Arabic
239
Rule 110
530
Seven Segment
599
Spelling Numbers
603
Tongue-twisters
408
United States
172