12 Days of Christmas
7th
99 Bottles of Beer
12th
Abundant Numbers
12th
Arabic to Roman
5th
Christmas Trees
8th
CSS Colors
5th
Cubes
7th
Diamonds
7th
Divisors
217th
10th
Emirp Numbers
8th
Evil Numbers
175th
8th
Fibonacci
42nd
Fizz Buzz
531st354th40th
Happy Numbers
9th
Leap Years
173rd
22nd
Leyland Numbers
12th
Morse Decoder
5th
Morse Encoder
5th
Niven Numbers
20th
Odious Numbers
139th
9th
Ordinal Numbers
37th
Pangram Grep
13th
Pascal’s Triangle
11th
Pernicious Numbers
13th
Prime Numbers
188th
6th
Quine
51st
Rock-paper-scissors-Spock-lizard
6th
Roman to Arabic
7th
Rule 110
9th
Seven Segment
7th
Sierpiński Triangle
9th
Tongue-twisters
11th
United States
8th
Vampire Numbers
6th
λ
9th
π
13th
τ
7th
φ
7th
√2
7th
𝑒
7th