12 Days of Christmas
111th
99 Bottles of Beer
106th
Abundant Numbers
34th
Arabic to Roman
9th
brainfuck
16th
Christmas Trees
45th
CSS Colors
45th
Diamonds
10th
Divisors
29th
Emirp Numbers
42nd
Evil Numbers
43rd
Fibonacci
71st
Fizz Buzz
60th
Happy Numbers
22nd
Leap Years
24th
Leyland Numbers
23rd
Morse Decoder
17th
Morse Encoder
17th
Niven Numbers
26th
Odious Numbers
38th
Ordinal Numbers
Pangram Grep
16th
Pascal’s Triangle
33rd
Pernicious Numbers
32nd
Prime Numbers
19th
Quine
11th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
18th
Rule 110
18th
Seven Segment
20th
Sierpiński Triangle
20th
Spelling Numbers
7th
Sudoku
6th
United States
λ
11th
π
10th
τ
9th
φ
√2
13th
𝑒
14th