12 Days of Christmas
7th
99 Bottles of Beer
13th
Abundant Numbers
15th
Arabic to Roman
6th
Christmas Trees
9th
CSS Colors
11th
Cubes
8th
Diamonds
11th
Divisors
245th
11th
Emirp Numbers
9th
Evil Numbers
204th
9th
Fibonacci
445th
57th
Fizz Buzz
583rd370th45th
Happy Numbers
9th
Leap Years
204th
24th
Leyland Numbers
13th
Morse Decoder
5th
Morse Encoder
5th
Niven Numbers
24th
Odious Numbers
161st
10th
Ordinal Numbers
46th
Pangram Grep
15th
Pascal’s Triangle
12th
Pernicious Numbers
15th
Prime Numbers
216th
7th
Quine
58th
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