12 Days of Christmas
6th
99 Bottles of Beer
18th
Abundant Numbers
13th989th
Abundant Numbers (Long)
7th
Alphabetic Numbers
59th
Arithmetic Numbers
10th
Arrows
13th
ASCII Table
9th
Catalan Numbers
21st
Christmas Trees
11th
Collatz
14th599th
64th
CSS Colors
20th
Day of Week
1st
Diamonds
13th
Divisors
18th1,370th
Emirp Numbers
19th
Emirp Numbers (Long)
8th
Emojify
7th
Evil Numbers
29th926th
Evil Numbers (Long)
18th510th
Farey Sequence
12th
Fibonacci
10th1,739th
Fizz Buzz
122nd648th40th534th1,306th211th69th95th149th1st1,250th126th255th256th44th33rd
Foo Fizz Buzz Bar
30th
2nd484th
Fractions
10th529th
Happy Numbers
22nd
Happy Numbers (Long)
8th
Inventory Sequence
11th
ISBN
13th
Kolakoski Sequence
10th
Leap Years
1st962nd
Leyland Numbers
9th
Look and Say
10th
Lucky Numbers
8th
Medal Tally
8th
Niven Numbers
34th
Niven Numbers (Long)
5th
Number Spiral
6th
Odious Numbers
26th668th
Odious Numbers (Long)
18th392nd
Ordinal Numbers
11th
Pangram Grep
19th
Partition Numbers
10th
Pascal’s Triangle
15th
Pernicious Numbers
38th587th
Pernicious Numbers (Long)
14th
Prime Numbers
22nd1,078th
Prime Numbers (Long)
20th
Quine
1st
Recamán
14th
Reverse Polish Notation
13th
Rock-paper-scissors-Spock-lizard
8th
Roman to Arabic
14th
ROT13
8th
Seven Segment
6th
Sierpiński Triangle
15th
Star Wars Opening Crawl
5th
Ten-pin Bowling
Tic-tac-toe
9th
Time Distance
5th
Tongue-twisters
15th327th
Transpose Sentence
4th
United States
13th
Vampire Numbers
10th
Van Eck Sequence
17th
Zeckendorf Representation
9th
π
20th