12 Days of Christmas
389
99 Bottles of Beer
345
Abundant Numbers
659
Arabic to Roman
423
Christmas Trees
505
Diamonds
400
Divisors
690
Emirp Numbers
403
Emojify
411
Evil Numbers
714
Fibonacci
755
Fizz Buzz
491
Happy Numbers
171
Leap Years
623
Leyland Numbers
520
Look and Say
496
Morse Decoder
234
Morse Encoder
242
Niven Numbers
664
Odious Numbers
753
Ordinal Numbers
443
Pangram Grep
545
Pascal’s Triangle
336
Pernicious Numbers
611
Poker
309
Prime Numbers
490
Rock-paper-scissors-Spock-lizard
444
Roman to Arabic
438
Rule 110
294
Seven Segment
324
Sierpiński Triangle
329
Tongue-twisters
342
United States
211
Vampire Numbers
422