12 Days of Christmas
17th
99 Bottles of Beer
19th
Abundant Numbers
14th939th
Abundant Numbers (Long)
6th
Arithmetic Numbers
7th
Arrows
12th
ASCII Table
8th
Catalan Numbers
17th
Christmas Trees
9th
Collatz
14th536th
54th
CSS Colors
17th
Day of Week
1st
Diamonds
9th
Divisors
15th1,308th
Emirp Numbers
20th
Emirp Numbers (Long)
7th
Emojify
6th
Evil Numbers
26th867th
Evil Numbers (Long)
17th452nd
Farey Sequence
11th
Fibonacci
8th1,638th
Fizz Buzz
118th606th37th510th1,256th200th66th91st141st1st1,181st123rd235th240th43rd31st
Foo Fizz Buzz Bar
28th
4th442nd
Fractions
8th482nd
Happy Numbers
22nd
Happy Numbers (Long)
7th
Inventory Sequence
9th
ISBN
12th
Kolakoski Sequence
9th
Leap Years
1st904th
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
25th631st
Odious Numbers (Long)
17th353rd
Ordinal Numbers
9th
Pangram Grep
16th
Partition Numbers
8th
Pascal’s Triangle
13th
Pernicious Numbers
37th551st
Pernicious Numbers (Long)
13th
Prime Numbers
19th1,022nd
Prime Numbers (Long)
15th
Quine
1st
Recamán
12th
Reverse Polish Notation
10th
Rock-paper-scissors-Spock-lizard
7th
Roman to Arabic
12th
ROT13
5th
Seven Segment
8th
Sierpiński Triangle
15th
Star Wars Opening Crawl
5th
Ten-pin Bowling
7th
Tic-tac-toe
7th
Time Distance
5th
Tongue-twisters
14th314th
Transpose Sentence
3rd
United States
13th
Vampire Numbers
11th
Van Eck Sequence
13th
Zeckendorf Representation
8th
π
14th