12 Days of Christmas
14th
99 Bottles of Beer
111th
Abundant Numbers
38th
Arabic to Roman
10th
brainfuck
17th
Christmas Trees
45th
CSS Colors
47th
Diamonds
14th
Divisors
32nd
Emirp Numbers
42nd
Evil Numbers
48th
Fibonacci
85th
Fizz Buzz
61st
Happy Numbers
26th
Leap Years
27th
Leyland Numbers
23rd
Morse Decoder
17th
Morse Encoder
18th
Niven Numbers
33rd
Odious Numbers
41st
Ordinal Numbers
Pangram Grep
17th
Pascal’s Triangle
35th
Pernicious Numbers
38th
Prime Numbers
26th
Quine
12th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
19th
Rule 110
19th
Seven Segment
21st
Sierpiński Triangle
20th
Spelling Numbers
8th
Sudoku
United States
λ
9th
π
13th
τ
10th
φ
14th
√2
14th
𝑒
17th