12 Days of Christmas
19th
99 Bottles of Beer
25th
Abundant Numbers
34th947th
Abundant Numbers (Long)
22nd
Arithmetic Numbers
17th
ASCII Table
9th
Catalan Numbers
33rd
Catalan’s Constant
13th
Christmas Trees
28th
Collatz
29th602nd
CSS Colors
22nd
Cubes
9th
Day of Week
1st
Diamonds
28th
Divisors
61st664th
Emirp Numbers
41st
Emojify
21st
Evil Numbers
44th
Evil Numbers (Long)
29th
Farey Sequence
12th
Fibonacci
41st214th
Fizz Buzz
1st924th64th
Foo Fizz Buzz Bar
2nd373rd
Fractions
22nd
Happy Numbers
33rd
Happy Numbers (Long)
19th
Intersection
17th
Kolakoski Constant
15th
Kolakoski Sequence
24th
Leap Years
1st
Leyland Numbers
27th
Look and Say
16th
Lucky Numbers
10th
Morse Decoder
13th
Niven Numbers
34th
Niven Numbers (Long)
5th
Number Spiral
10th
Odious Numbers
39th
Odious Numbers (Long)
27th
Ordinal Numbers
27th
Pangram Grep
32nd
Pascal’s Triangle
28th
Pernicious Numbers
62nd
Prime Numbers
60th
Prime Numbers (Long)
30th
Quine
1st
Recamán
21st
Rijndael S-box
21st
Rock-paper-scissors-Spock-lizard
12th
Roman to Arabic
23rd
Seven Segment
27th
Sierpiński Triangle
24th
Sudoku
5th
Tongue-twisters
29th
United States
18th352nd
Vampire Numbers
16th
π
37th
τ
20th