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
6th
Divisors
217th
10th
Emirp Numbers
8th
Evil Numbers
173rd
8th
Fibonacci
41st
Fizz Buzz
524th353rd38th
Happy Numbers
8th
Leap Years
173rd
21st
Leyland Numbers
12th
Morse Decoder
6th
Morse Encoder
7th
Niven Numbers
20th
Odious Numbers
138th
9th
Ordinal Numbers
37th
Pangram Grep
13th
Pascal’s Triangle
11th
Pernicious Numbers
13th
Prime Numbers
188th
5th
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