12 Days of Christmas
37th
99 Bottles of Beer
17th
Abundant Numbers
40th
brainfuck
34th
Christmas Trees
5th
Cubes
12th
Diamonds
20th
Divisors
91st
Emirp Numbers
21st
Evil Numbers
32nd
Fibonacci
768th1st
Fizz Buzz
138th
Happy Numbers
26th
Leap Years
32nd
Morse Encoder
12th
Niven Numbers
49th
Odious Numbers
31st
Ordinal Numbers
24th
Pangram Grep
Pascal’s Triangle
20th
Pernicious Numbers
37th
Prime Numbers
44th
Quine
1st
Rock-paper-scissors-Spock-lizard
9th
Roman to Arabic
Rule 110
12th
Seven Segment
17th
Sierpiński Triangle
24th
λ
15th
π
58th
17th
τ
12th
φ
15th
√2
13th
𝑒
15th