12 Days of Christmas
4th
161st
99 Bottles of Beer
2nd
132nd
Abundant Numbers
1st
15th
Abundant Numbers (Long)
1st
78th
Arabic to Roman
70th
Arithmetic Numbers
4th
Ascending Primes
20th
ASCII Table
1st
55th
Billiards
26th
Card Number Validation
35th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
24th
Christmas Trees
1st
85th
Collatz
2nd
111th
Cubes
💎
70th
Diamonds
4th
21st
Divisors
1st
124th
Emirp Numbers
9th
16th
Emirp Numbers (Long)
9th
49th
Evil Numbers
6th
1st8th
Evil Numbers (Long)
1st
1st4th
Factorial Factorisation
2nd
32nd
Farey Sequence
39th
Fibonacci
1st
1st
Fizz Buzz
205th299th
Foo Fizz Buzz Bar
1st
139th
Fractions
1st
62nd
Game of Life
46th
Gijswijt’s Sequence
41st
Happy Numbers
12th
56th
Happy Numbers (Long)
1st
69th
Hexdump
56th
Intersection
1st
94th
Inventory Sequence
2nd
25th
ISBN
9th
79th
Jacobi Symbol
4th
Kolakoski Constant
💎
36th
Kolakoski Sequence
1st
4th
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
91st
Look and Say
1st
54th
Lucky Numbers
8th
35th
Lucky Tickets
1st
46th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
34th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
84th5th
PalindromemordnilaP
1st3rd53rd
Pangram Grep
1st
97th
Pascal’s Triangle
3rd
47th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
30th
Prime Numbers
1st
1st14th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
61st
Repeating Decimals
24th
Reverse Polish Notation
1st
68th
Rijndael S-box
32nd
Roman to Arabic
1st
64th
ROT13
1st
58th
Rule 110
3rd
29th
Seven Segment
73rd
Sierpiński Triangle
1st
17th
Smith Numbers
61st
Spelling Numbers
6th
51st
Tic-tac-toe
1st
30th
Tongue-twisters
97th
Tower of Hanoi
16th
Transpose Sentence
54th
United States
Vampire Numbers
3rd
58th
Van Eck Sequence
5th
48th
Zeckendorf Representation
47th
π
5th
52nd
τ
4th
50th
φ
1st
36th
√2
1st
1st
𝑒
2nd
1st