12 Days of Christmas
27th
99 Bottles of Beer
24th
Abundant Numbers
30th875th
Abundant Numbers (Long)
19th
Arithmetic Numbers
14th
ASCII Table
8th
Catalan Numbers
26th
Catalan’s Constant
13th
Christmas Trees
26th
Collatz
26th520th
CSS Colors
19th
Cubes
10th
Day of Week
1st
Diamonds
24th
Divisors
54th609th
Emirp Numbers
38th
Emojify
19th
Evil Numbers
38th
Evil Numbers (Long)
26th
Farey Sequence
10th
Fibonacci
34th166th
Fizz Buzz
1st876th57th
Foo Fizz Buzz Bar
4th342nd
Fractions
19th
Happy Numbers
30th
Happy Numbers (Long)
17th
Intersection
15th
Kolakoski Constant
14th
Kolakoski Sequence
21st
Leap Years
1st
Leyland Numbers
24th
Look and Say
14th
Lucky Numbers
9th
Morse Decoder
12th
Niven Numbers
29th
Niven Numbers (Long)
3rd
Number Spiral
9th
Odious Numbers
34th
Odious Numbers (Long)
24th
Ordinal Numbers
25th
Pangram Grep
27th
Pascal’s Triangle
24th
Pernicious Numbers
52nd
Prime Numbers
50th
Prime Numbers (Long)
24th
Quine
1st
Recamán
18th
Rijndael S-box
18th
Rock-paper-scissors-Spock-lizard
13th
Roman to Arabic
21st
Seven Segment
25th
Sierpiński Triangle
23rd
Sudoku
6th
Tongue-twisters
27th
United States
17th321st
Vampire Numbers
13th
π
32nd
τ
18th