12 Days of Christmas
3rd
108th
99 Bottles of Beer
2nd
88th
Abundant Numbers
1st
11th
Abundant Numbers (Long)
1st
49th
Arabic to Roman
50th
Arithmetic Numbers
4th
Ascending Primes
9th
ASCII Table
2nd
32nd
Catalan Numbers
1st
1st
Catalan’s Constant
1st
16th
Christmas Trees
1st
59th
Collatz
3rd
Cubes
💎
47th
Diamonds
4th
16th
Divisors
1st
82nd
Emirp Numbers
9th
9th
Emirp Numbers (Long)
7th
27th
Evil Numbers
4th
1st
3rd
Evil Numbers (Long)
1st
1st
3rd
Farey Sequence
17th
Fibonacci
1st
1st
Fizz Buzz
137th
245th
Foo Fizz Buzz Bar
1st
88th
Fractions
1st
69th
Game of Life
25th
Gijswijt’s Sequence
24th
Happy Numbers
9th
31st
Happy Numbers (Long)
1st
48th
Hexdump
33rd
Intersection
1st
68th
Inventory Sequence
2nd
15th
ISBN
7th
50th
Jacobi Symbol
3rd
Kolakoski Constant
💎
23rd
Kolakoski Sequence
1st
1st
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
61st
Look and Say
1st
37th
Lucky Numbers
4th
19th
Lucky Tickets
1st
25th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
22nd
Odious Numbers
4th
1st
1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
59th
2nd
Pangram Grep
1st
58th
Pascal’s Triangle
3rd
27th
Pernicious Numbers
3rd
1st
Pernicious Numbers (Long)
1st
16th
Prime Numbers
1st
1st
7th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
39th
Repeating Decimals
15th
Reverse Polish Notation
1st
40th
Rijndael S-box
16th
Roman to Arabic
1st
45th
Rule 110
3rd
18th
Seven Segment
49th
Sierpiński Triangle
1st
12th
Smith Numbers
39th
Spelling Numbers
5th
32nd
Tongue-twisters
67th
Vampire Numbers
3rd
44th
Van Eck Sequence
5th
29th
π
5th
29th
τ
4th
29th
φ
1st
25th
√2
1st
1st
𝑒
2nd
1st