12 Days of Christmas
111th
99 Bottles of Beer
106th
Abundant Numbers
35th
Arabic to Roman
9th
brainfuck
16th
Christmas Trees
45th
CSS Colors
45th
Diamonds
11th
Divisors
30th
Emirp Numbers
42nd
Evil Numbers
43rd
Fibonacci
72nd
Fizz Buzz
60th
Happy Numbers
22nd
Leap Years
24th
Leyland Numbers
22nd
Morse Decoder
17th
Morse Encoder
17th
Niven Numbers
27th
Odious Numbers
37th
Ordinal Numbers
Pangram Grep
16th
Pascal’s Triangle
33rd
Pernicious Numbers
31st
Prime Numbers
19th
Quine
11th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
18th
Rule 110
19th
Seven Segment
20th
Sierpiński Triangle
20th
Spelling Numbers
7th
Sudoku
6th
United States
λ
11th
π
11th
τ
10th
φ
√2
14th
𝑒
15th