12 Days of Christmas
13th
99 Bottles of Beer
18th
Abundant Numbers
58th31st
Arabic to Roman
7th
brainfuck
13th
Christmas Trees
76th
CSS Colors
9th12th
Cubes
10th
Diamonds
15th
Divisors
32nd
Emirp Numbers
16th
Emojify
Evil Numbers
94th
Fibonacci
126th
Fizz Buzz
1st
Happy Numbers
17th
Leap Years
22nd19th34th1st18th
Leyland Numbers
24th
Look and Say
40th
Lucky Tickets
28th
Morse Decoder
Morse Encoder
11th
Niven Numbers
65th34th
1st38th
Odious Numbers
92nd
Ordinal Numbers
Pangram Grep
64th
Pascal’s Triangle
72nd
Pernicious Numbers
55th
Poker
Prime Numbers
106th
Quine
30th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
32nd
Rule 110
39th
Seven Segment
13th
Sierpiński Triangle
36th16th
Spelling Numbers
18th
Ten-pin Bowling
Tongue-twisters
2nd
United States
λ
31st
π
62nd
τ
52nd
φ
43rd
√2
48th
𝑒
57th