12 Days of Christmas
389
99 Bottles of Beer
345
Abundant Numbers
660
Arabic to Roman
424
Christmas Trees
506
Diamonds
401
Divisors
691
Emirp Numbers
403
Emojify
411
Evil Numbers
714
Fibonacci
756
Fizz Buzz
491
Happy Numbers
171
Leap Years
623
Leyland Numbers
521
Look and Say
497
Morse Decoder
234
Morse Encoder
242
Niven Numbers
664
Odious Numbers
754
Ordinal Numbers
443
Pangram Grep
545
Pascal’s Triangle
336
Pernicious Numbers
611
Poker
305
Prime Numbers
491
Rock-paper-scissors-Spock-lizard
444
Roman to Arabic
438
Rule 110
294
Seven Segment
324
Sierpiński Triangle
329
Tongue-twisters
338
United States
199
Vampire Numbers
422