12 Days of Christmas
4th
159th
99 Bottles of Beer
2nd
129th
Abundant Numbers
1st
15th
Abundant Numbers (Long)
1st
78th
Arabic to Roman
70th
Arithmetic Numbers
4th
Ascending Primes
19th
ASCII Table
1st
55th
Billiards
26th
Card Number Validation
36th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
24th
Christmas Trees
1st
85th
Collatz
2nd
110th
Cubes
💎
69th
Diamonds
4th
20th
Divisors
1st
121st
Emirp Numbers
9th
16th
Emirp Numbers (Long)
8th
49th
Evil Numbers
6th
1st8th
Evil Numbers (Long)
1st
1st4th
Factorial Factorisation
2nd
33rd
Farey Sequence
40th
Fibonacci
1st
1st
Fizz Buzz
203rd300th
Foo Fizz Buzz Bar
1st
136th
Fractions
1st
62nd
Game of Life
47th
Gijswijt’s Sequence
39th
Happy Numbers
12th
55th
Happy Numbers (Long)
1st
69th
Hexdump
53rd
Intersection
1st
94th
Inventory Sequence
2nd
24th
ISBN
9th
78th
Jacobi Symbol
4th
Kolakoski Constant
💎
36th
Kolakoski Sequence
1st
3rd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
89th
Look and Say
1st
55th
Lucky Numbers
8th
33rd
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
83rd4th
PalindromemordnilaP
1st3rd50th
Pangram Grep
1st
94th
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
62nd
Repeating Decimals
23rd
Reverse Polish Notation
1st
65th
Rijndael S-box
31st
Roman to Arabic
1st
64th
ROT13
1st
58th
Rule 110
3rd
28th
Seven Segment
71st
Sierpiński Triangle
1st
17th
Smith Numbers
60th
Spelling Numbers
6th
49th
Tic-tac-toe
1st
31st
Tongue-twisters
94th
Tower of Hanoi
14th
Transpose Sentence
52nd
United States
Vampire Numbers
3rd
59th
Van Eck Sequence
5th
49th
Zeckendorf Representation
47th
π
5th
53rd
τ
4th
51st
φ
1st
34th
√2
1st
1st
𝑒
2nd
1st