12 Days of Christmas
17th
99 Bottles of Beer
19th
Abundant Numbers
15th980th
Abundant Numbers (Long)
6th
Arithmetic Numbers
7th
Arrows
13th
ASCII Table
8th
Catalan Numbers
19th
Christmas Trees
9th
Collatz
14th589th
62nd
CSS Colors
18th
Day of Week
1st
Diamonds
11th
Divisors
17th1,359th
Emirp Numbers
20th
Emirp Numbers (Long)
7th
Emojify
6th
Evil Numbers
28th911th
Evil Numbers (Long)
17th489th
Farey Sequence
11th
Fibonacci
9th1,709th
Fizz Buzz
122nd638th39th532nd1,292nd206th68th92nd147th1st1,245th126th252nd250th44th33rd
Foo Fizz Buzz Bar
28th
4th483rd
Fractions
9th521st
Happy Numbers
23rd
Happy Numbers (Long)
7th
Inventory Sequence
10th
ISBN
12th
Kolakoski Sequence
10th
Leap Years
1st947th
Leyland Numbers
9th
Look and Say
9th
Lucky Numbers
7th
Medal Tally
6th
Niven Numbers
33rd
Niven Numbers (Long)
3rd
Number Spiral
6th
Odious Numbers
26th657th
Odious Numbers (Long)
17th377th
Ordinal Numbers
10th
Pangram Grep
17th
Partition Numbers
9th
Pascal’s Triangle
14th
Pernicious Numbers
38th581st
Pernicious Numbers (Long)
13th
Prime Numbers
23rd1,071st
Prime Numbers (Long)
19th
Quine
1st
Recamán
13th
Reverse Polish Notation
10th
Rock-paper-scissors-Spock-lizard
7th
Roman to Arabic
12th
ROT13
7th
Seven Segment
8th
Sierpiński Triangle
15th
Star Wars Opening Crawl
5th
Ten-pin Bowling
7th
Tic-tac-toe
8th
Time Distance
5th
Tongue-twisters
14th338th
Transpose Sentence
3rd
United States
13th
Vampire Numbers
11th
Van Eck Sequence
14th
Zeckendorf Representation
8th
π
19th