12 Days of Christmas
19th
99 Bottles of Beer
22nd
Abundant Numbers
29th816th
Abundant Numbers (Long)
19th
Arithmetic Numbers
14th
ASCII Table
8th
Catalan Numbers
26th
Catalan’s Constant
13th
Christmas Trees
26th
Collatz
25th467th
CSS Colors
19th
Cubes
9th
Day of Week
1st
Diamonds
23rd
Divisors
54th572nd
Emirp Numbers
37th
Emojify
19th
Evil Numbers
37th
Evil Numbers (Long)
26th
Farey Sequence
10th
Fibonacci
34th157th
Fizz Buzz
1st825th53rd
Foo Fizz Buzz Bar
1st296th
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
8th
Morse Decoder
12th
Niven Numbers
27th
Niven Numbers (Long)
3rd
Number Spiral
8th
Odious Numbers
31st
Odious Numbers (Long)
23rd
Ordinal Numbers
25th
Pangram Grep
27th
Pascal’s Triangle
24th
Pernicious Numbers
51st
Prime Numbers
49th
Prime Numbers (Long)
24th
Quine
1st
Recamán
18th
Rijndael S-box
18th
Rock-paper-scissors-Spock-lizard
12th
Roman to Arabic
19th
Seven Segment
25th
Sierpiński Triangle
22nd
Sudoku
5th
Tongue-twisters
27th
United States
17th290th
Vampire Numbers
13th
π
31st
τ
17th