12 Days of Christmas
7th
99 Bottles of Beer
13th
Abundant Numbers
14th
Arabic to Roman
6th
Christmas Trees
9th
CSS Colors
10th
Cubes
8th
Diamonds
9th
Divisors
243rd
10th
Emirp Numbers
8th
Evil Numbers
201st
9th
Fibonacci
441st
56th
Fizz Buzz
577th367th43rd
Happy Numbers
9th
Leap Years
199th
23rd
Leyland Numbers
13th
Morse Decoder
5th
Morse Encoder
5th
Niven Numbers
21st
Odious Numbers
157th
9th
Ordinal Numbers
44th
Pangram Grep
14th
Pascal’s Triangle
11th
Pernicious Numbers
14th
Prime Numbers
214th
7th
Quine
56th
Rock-paper-scissors-Spock-lizard
6th
Roman to Arabic
7th
Rule 110
10th
Seven Segment
7th
Sierpiński Triangle
10th
Tongue-twisters
12th
United States
9th
Vampire Numbers
6th
λ
11th
π
10th
τ
9th
φ
9th
√2
8th
𝑒
9th