12 Days of Christmas
18th
99 Bottles of Beer
40th18th
Abundant Numbers
8th
brainfuck
Christmas Trees
13th
CSS Colors
36th
Cubes
34th
Diamonds
49th12th
47th
Divisors
17th
Emirp Numbers
20th
Emojify
19th
Evil Numbers
8th
Fibonacci
262nd88th
Fizz Buzz
46th
719th
Happy Numbers
31st
Intersection
43rd35th
46th
Leyland Numbers
32nd
Morse Decoder
13th
Morse Encoder
21st
Ordinal Numbers
9th
Pascal’s Triangle
13th
Pernicious Numbers
50th29th
69th
Quine
1st
Rock-paper-scissors-Spock-lizard
13th
Roman to Arabic
25th
Rule 110
9th
Seven Segment
14th
Sierpiński Triangle
10th
Spelling Numbers
10th
Tongue-twisters
68th14th
United States
24th
λ
16th
π
22nd
τ
20th
φ
20th
√2
3rd
20th1st
1st15th