12 Days of Christmas
16th
99 Bottles of Beer
19th
Abundant Numbers
15th866th
Abundant Numbers (Long)
6th
Arithmetic Numbers
7th
Arrows
12th
ASCII Table
8th
Catalan Numbers
16th
Christmas Trees
9th
Collatz
7th469th
52nd
CSS Colors
17th
Day of Week
1st
Diamonds
9th
Divisors
14th1,250th
Emirp Numbers
18th
Emirp Numbers (Long)
6th
Emojify
6th
Evil Numbers
26th807th
Evil Numbers (Long)
17th398th
Farey Sequence
11th
Fibonacci
8th1,537th
Fizz Buzz
110th571st35th480th1,207th194th64th87th137th1st1,133rd120th223rd232nd40th30th
Foo Fizz Buzz Bar
28th
4th410th
Fractions
8th437th
Happy Numbers
21st
Happy Numbers (Long)
7th
Inventory Sequence
10th
ISBN
12th
Kolakoski Sequence
10th
Leap Years
1st852nd
Leyland Numbers
9th
Look and Say
8th
Lucky Numbers
6th
Medal Tally
6th
Niven Numbers
29th
Niven Numbers (Long)
3rd
Number Spiral
6th
Odious Numbers
23rd584th
Odious Numbers (Long)
16th308th
Ordinal Numbers
7th
Pangram Grep
16th
Pascal’s Triangle
13th
Pernicious Numbers
34th518th
Pernicious Numbers (Long)
11th
Prime Numbers
18th969th
Prime Numbers (Long)
13th
Quine
1st
Recamán
12th
Reverse Polish Notation
10th
Rock-paper-scissors-Spock-lizard
7th
Roman to Arabic
12th
ROT13
6th
Seven Segment
8th
Sierpiński Triangle
15th
Star Wars Opening Crawl
5th
Ten-pin Bowling
7th
Tic-tac-toe
8th
Time Distance
5th
Tongue-twisters
14th287th
Transpose Sentence
3rd
United States
13th
Vampire Numbers
11th
Van Eck Sequence
13th
Zeckendorf Representation
8th
π
15th