12 Days of Christmas
13th
99 Bottles of Beer
32nd
Abundant Numbers
18th
750th
Abundant Numbers (Long)
17th
391st
Arabic to Roman
12th
Arithmetic Numbers
24th
Arrows
13th
11th
15th
11th
14th
Ascending Primes
17th
ASCII Table
19th
Billiards
7th
Card Number Validation
19th
Catalan Numbers
9th
Christmas Trees
14th
Collatz
20th20th19th184th52nd90th17th13th9th51st9th20th20th24th13th10th14th12th14th12th42nd12th17th19th22nd232nd36th36th15th40th17th9th26th43rd30th18th556th18th19th68th67th14th
20th9th13th8th23rd
Day of Week
14th
Diamonds
29th
13th
67th
Divisors
15th
Emirp Numbers
29th31st
21st
Emirp Numbers (Long)
15th
7th
Emojify
17th
Evil Numbers
101st99th
23rd
53rd
Evil Numbers (Long)
18th
Factorial Factorisation
7th
Farey Sequence
9th
Fibonacci
34th
Fizz Buzz
1st
Foo Fizz Buzz Bar
4th
Fractions
17th
Game of Life
21st
12th
Happy Numbers
33rd32nd
40th
21st
Happy Numbers (Long)
11th
Hexdump
12th
Intersection
9th
Inventory Sequence
13th
ISBN
28th
22nd
22nd
20th
Kaprekar Numbers
12th
Kolakoski Constant
8th
Kolakoski Sequence
19th
Leap Years
19th
Leyland Numbers
8th
ln 2
12th
Look and Say
10th
11th
Lucky Numbers
32nd
13th
Lucky Tickets
10th
Mandelbrot
11th
Medal Tally
11th
Minesweeper
10th3rd
12th
9th
Niven Numbers
19th
Niven Numbers (Long)
19th
Number Spiral
29th
Odious Numbers
22nd
Odious Numbers (Long)
15th
Ordinal Numbers
9th
PalindromemordnilaP
7th
Pangram Grep
18th
Partition Numbers
11th
Pascal’s Triangle
14th
36th
Pernicious Numbers
54th58th
30th
Pernicious Numbers (Long)
15th
Prime Numbers
15th
Prime Numbers (Long)
8th
Quine
1st
72nd
Recamán
13th
Repeating Decimals
8th
Rock-paper-scissors-Spock-lizard
18th12th
ROT13
10th
Scrambled Sort
8th
Set
6th
Seven Segment
14th
Sierpiński Triangle
8th
Smith Numbers
10th
Spelling Numbers
6th
Star Wars GPT
4th
Ten-pin Bowling
13th
Time Distance
9th
Tongue-twisters
24th
Transpose Sentence
16th
Trinomial Triangle
8th
United States
8th
Vampire Numbers
16th
10th
Van Eck Sequence
13th
Zeckendorf Representation
12th
π
15th
τ
14th
φ
2nd
√2
1st
𝑒
8th
36th