12 Days of Christmas
17th
99 Bottles of Beer
20th
Abundant Numbers
16th996th
Abundant Numbers (Long)
7th
Alphabetic Numbers
62nd
Arithmetic Numbers
10th
Arrows
14th
ASCII Table
9th
Catalan Numbers
21st
Christmas Trees
11th
Collatz
14th605th
64th
CSS Colors
20th
Day of Week
1st
Diamonds
14th
Divisors
18th1,372nd
Emirp Numbers
21st
Emirp Numbers (Long)
8th
Emojify
7th
Evil Numbers
30th928th
Evil Numbers (Long)
18th510th
Farey Sequence
12th
Fibonacci
10th1,745th
Fizz Buzz
122nd649th40th534th1,306th211th69th95th149th1st1,270th126th255th256th44th33rd
Foo Fizz Buzz Bar
30th
5th503rd
Fractions
10th531st
Happy Numbers
24th
Happy Numbers (Long)
8th
Inventory Sequence
11th
ISBN
13th
Kolakoski Sequence
10th
Leap Years
1st963rd
Leyland Numbers
10th
Look and Say
10th
Lucky Numbers
8th
Medal Tally
7th
Niven Numbers
36th
Niven Numbers (Long)
5th
Number Spiral
6th
Odious Numbers
28th671st
Odious Numbers (Long)
18th392nd
Ordinal Numbers
11th
Pangram Grep
19th
Partition Numbers
10th
Pascal’s Triangle
15th
Pernicious Numbers
42nd592nd
Pernicious Numbers (Long)
14th
Prime Numbers
25th1,080th
Prime Numbers (Long)
20th
Quine
1st
Recamán
14th
Reverse Polish Notation
13th
Rock-paper-scissors-Spock-lizard
7th
Roman to Arabic
14th
ROT13
8th
Seven Segment
9th
Sierpiński Triangle
15th
Star Wars Opening Crawl
5th
Ten-pin Bowling
Tic-tac-toe
9th
Time Distance
5th
Tongue-twisters
15th343rd
Transpose Sentence
4th
United States
14th
Vampire Numbers
13th
Van Eck Sequence
17th
Zeckendorf Representation
9th
π
20th