12 Days of Christmas
11th
99 Bottles of Beer
13th
Abundant Numbers
50th
26th
Arabic to Roman
7th
brainfuck
11th
Christmas Trees
65th
CSS Colors
7th
11th
Cubes
10th
Diamonds
14th
Divisors
26th
Emirp Numbers
12th
Evil Numbers
80th
Fibonacci
101st
Fizz Buzz
1st
Happy Numbers
14th
Leap Years
14th
14th
12th
1st
17th
Leyland Numbers
20th
Look and Say
34th
Lucky Tickets
17th
Morse Encoder
9th
Niven Numbers
50th
23rd
1st
28th
Odious Numbers
76th
Pangram Grep
54th
Pascal’s Triangle
58th
Pernicious Numbers
46th
Prime Numbers
86th
Quine
25th
Roman to Arabic
25th
Rule 110
34th
Seven Segment
12th
Sierpiński Triangle
33rd
13th
Spelling Numbers
16th
Tongue-twisters
2nd
λ
26th
π
46th
τ
40th
φ
35th
√2
36th
𝑒
40th