12 Days of Christmas
27th
99 Bottles of Beer
24th
Abundant Numbers
31st906th
Abundant Numbers (Long)
19th
Arithmetic Numbers
14th
ASCII Table
8th
Catalan Numbers
30th
Catalan’s Constant
13th
Christmas Trees
26th
Collatz
26th558th
CSS Colors
19th
Cubes
10th
Day of Week
1st
Diamonds
24th
Divisors
55th641st
Emirp Numbers
38th
Emojify
19th
Evil Numbers
40th
Evil Numbers (Long)
27th
Farey Sequence
10th
Fibonacci
38th187th
Fizz Buzz
1st903rd60th
Foo Fizz Buzz Bar
4th362nd
Fractions
20th
Happy Numbers
31st
Happy Numbers (Long)
18th
Intersection
15th
Kolakoski Constant
14th
Kolakoski Sequence
22nd
Leap Years
1st
Leyland Numbers
25th
Look and Say
14th
Lucky Numbers
9th
Morse Decoder
12th
Niven Numbers
31st
Niven Numbers (Long)
3rd
Number Spiral
9th
Odious Numbers
36th
Odious Numbers (Long)
25th
Ordinal Numbers
25th
Pangram Grep
28th
Pascal’s Triangle
25th
Pernicious Numbers
54th
Prime Numbers
55th
Prime Numbers (Long)
26th
Quine
1st
Recamán
18th
Rijndael S-box
19th
Rock-paper-scissors-Spock-lizard
13th
Roman to Arabic
21st
Seven Segment
25th
Sierpiński Triangle
23rd
Sudoku
6th
Tongue-twisters
27th
United States
17th334th
Vampire Numbers
13th
π
34th
τ
18th