12 Days of Christmas
17th
99 Bottles of Beer
19th
Abundant Numbers
15th887th
Abundant Numbers (Long)
6th
Arithmetic Numbers
7th
Arrows
12th
ASCII Table
8th
Catalan Numbers
16th
Christmas Trees
9th
Collatz
14th490th
52nd
CSS Colors
17th
Day of Week
1st
Diamonds
9th
Divisors
15th1,265th
Emirp Numbers
19th
Emirp Numbers (Long)
6th
Emojify
6th
Evil Numbers
26th825th
Evil Numbers (Long)
17th410th
Farey Sequence
11th
Fibonacci
8th1,562nd
Fizz Buzz
113th580th36th485th1,223rd197th64th87th140th1st1,146th120th229th236th41st30th
Foo Fizz Buzz Bar
28th
4th421st
Fractions
8th450th
Happy Numbers
22nd
Happy Numbers (Long)
7th
Inventory Sequence
10th
ISBN
12th
Kolakoski Sequence
10th
Leap Years
1st870th
Leyland Numbers
9th
Look and Say
8th
Lucky Numbers
7th
Medal Tally
6th
Niven Numbers
29th
Niven Numbers (Long)
3rd
Number Spiral
6th
Odious Numbers
23rd598th
Odious Numbers (Long)
16th321st
Ordinal Numbers
9th
Pangram Grep
16th
Pascal’s Triangle
13th
Pernicious Numbers
34th526th
Pernicious Numbers (Long)
13th
Prime Numbers
19th985th
Prime Numbers (Long)
15th
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
14th296th
Transpose Sentence
3rd
United States
13th
Vampire Numbers
11th
Van Eck Sequence
13th
Zeckendorf Representation
8th
π
15th