12 Days of Christmas
120th
99 Bottles of Beer
130th
Abundant Numbers
76th
brainfuck
21st
Christmas Trees
26th7th8th
81st
CSS Colors
Cubes
22nd
Day of Week
1st
Diamonds
7th
Divisors
18th
Emirp Numbers
21st
Evil Numbers
58th
Fibonacci
41st
Fizz Buzz
39th
Foo Fizz Buzz Bar
56th
Happy Numbers
26th
Leap Years
82nd
Leyland Numbers
7th174th
Morse Decoder
9th
Morse Encoder
20th
Niven Numbers
77th
Odious Numbers
59th
Ordinal Numbers
14th
Pangram Grep
15th
Pascal’s Triangle
8th
Pernicious Numbers
58th
Prime Numbers
80th
Quine
13th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
34th
Seven Segment
24th
Sierpiński Triangle
17th
Spelling Numbers
15th
Sudoku
4th
United States