12 Days of Christmas
17th
99 Bottles of Beer
40th18th
Abundant Numbers
brainfuck
Christmas Trees
13th
CSS Colors
36th
Cubes
Diamonds
49th
47th
Divisors
17th
Emirp Numbers
20th
Emojify
19th
Evil Numbers
8th
Fibonacci
265th88th
Fizz Buzz
49th
721st
Happy Numbers
Intersection
43rd31st
46th
Leyland Numbers
28th
Morse Decoder
12th
Morse Encoder
20th
Ordinal Numbers
9th
Pascal’s Triangle
9th
Pernicious Numbers
50th29th
69th
Quine
1st
Rock-paper-scissors-Spock-lizard
12th
Roman to Arabic
26th
Rule 110
Seven Segment
Sierpiński Triangle
10th
Spelling Numbers
9th
Tongue-twisters
68th14th
United States
24th
λ
16th
π
22nd
τ
20th
φ
20th
√2
3rd
20th1st
1st15th