12 Days of Christmas
6th
99 Bottles of Beer
9th
Abundant Numbers
10th
Arabic to Roman
4th
Christmas Trees
6th
CSS Colors
4th
Cubes
5th
Diamonds
5th
Divisors
192nd
7th
Emirp Numbers
7th
Evil Numbers
154th
8th
Fibonacci
34th
Fizz Buzz
456th
254th
31st
Happy Numbers
7th
Leap Years
149th
18th
Leyland Numbers
9th
Morse Decoder
3rd
Morse Encoder
4th
Niven Numbers
15th
Odious Numbers
124th
8th
Ordinal Numbers
32nd
Pangram Grep
10th
Pascal’s Triangle
8th
Pernicious Numbers
11th
Prime Numbers
171st
5th
Quine
41st
Rock-paper-scissors-Spock-lizard
3rd
Roman to Arabic
5th
Rule 110
8th
Seven Segment
6th
Sierpiński Triangle
8th
Tongue-twisters
8th
United States
6th
Vampire Numbers
5th
λ
8th
π
11th
τ
6th
φ
6th
√2
6th
𝑒
6th