12 Days of Christmas
6th
99 Bottles of Beer
9th
Abundant Numbers
10th
Arabic to Roman
4th
Christmas Trees
6th
CSS Colors
4th
Cubes
6th
Diamonds
6th
Divisors
193rd
7th
Emirp Numbers
7th
Evil Numbers
155th
8th
Fibonacci
34th
Fizz Buzz
457th
254th
32nd
Happy Numbers
8th
Leap Years
150th
18th
Leyland Numbers
9th
Morse Decoder
3rd
Morse Encoder
3rd
Niven Numbers
15th
Odious Numbers
125th
8th
Ordinal Numbers
32nd
Pangram Grep
10th
Pascal’s Triangle
8th
Pernicious Numbers
11th
Prime Numbers
172nd
6th
Quine
41st
Rock-paper-scissors-Spock-lizard
3rd
Roman to Arabic
5th
Rule 110
8th
Seven Segment
6th
Sierpiński Triangle
7th
Tongue-twisters
8th
United States
6th
Vampire Numbers
5th
λ
8th
π
11th
τ
6th
φ
6th
√2
6th
𝑒
6th