12 Days of Christmas
125th
99 Bottles of Beer
81st
Abundant Numbers
295th
Arabic to Roman
38th
Christmas Trees
51st
CSS Colors
160th
Divisors
368th
Emirp Numbers
270th
Evil Numbers
424th
Fibonacci
200th
Fizz Buzz
714th
Happy Numbers
240th
Leap Years
394th
Look and Say
357th
Morse Decoder
157th
Niven Numbers
299th
Odious Numbers
325th
Ordinal Numbers
248th
Pangram Grep
193rd
Pascal’s Triangle
520th
Pernicious Numbers
294th
Prime Numbers
502nd
Rock-paper-scissors-Spock-lizard
153rd
Roman to Arabic
186th
Spelling Numbers
Tongue-twisters
74th
United States
172nd