12 Days of Christmas
39th
13th
5th
99 Bottles of Beer
14th
7th
8th
Abundant Numbers
41st
Arabic to Roman
20th
12th
237th
Arrows
105th
ASCII Table
18th
154th
brainfuck
50th
Christmas Trees
35th
Collatz
42nd
117th
Cubes
16th
3rd
Diamonds
4th
2nd
93rd
Evil Numbers (Long)
12th
29th
Fizz Buzz
111th
37th
Forsyth–Edwards Notation
8th
ISBN
18th
Look and Say
17th
309th
Niven Numbers (Long)
27th
16th
37th
Repeating Decimals
7th
6th
Sierpiński Triangle
9th
Sudoku
3rd
Tongue-twisters
14th
116th
Van Eck Sequence
18th
λ
16th
π
10th
7th
188th
τ
21st
√2
12th
349th
𝑒
13th
11th