12 Days of Christmas
13th
99 Bottles of Beer
18th
Abundant Numbers
60th34th
Arabic to Roman
8th
brainfuck
13th
Christmas Trees
78th
CSS Colors
9th14th
Cubes
10th
Diamonds
16th
Divisors
32nd
Emirp Numbers
16th
Emojify
Evil Numbers
95th
Fibonacci
131st
Fizz Buzz
1st
Happy Numbers
17th
Leap Years
23rd19th42nd3rd19th
Leyland Numbers
25th
Look and Say
42nd
Lucky Tickets
28th
Morse Decoder
Morse Encoder
11th
Niven Numbers
66th34th
1st38th
Odious Numbers
93rd
Ordinal Numbers
Pangram Grep
67th
Pascal’s Triangle
75th
Pernicious Numbers
57th
Poker
Prime Numbers
111th
Quine
33rd
Rock-paper-scissors-Spock-lizard
Roman to Arabic
33rd
Rule 110
39th
Seven Segment
14th
Sierpiński Triangle
36th16th
Spelling Numbers
20th
Ten-pin Bowling
Tongue-twisters
2nd
United States
λ
32nd
π
65th
τ
53rd
φ
44th
√2
50th
𝑒
60th