12 Days of Christmas
5th
170th
99 Bottles of Beer
2nd
139th
Abundant Numbers
1st
16th
Abundant Numbers (Long)
1st
83rd
Arabic to Roman
75th
Arithmetic Numbers
4th
Ascending Primes
22nd
ASCII Table
1st
62nd
Billiards
35th
Card Number Validation
39th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
31st
Christmas Trees
1st
94th
Collatz
2nd
118th
Cubes
💎
75th
Diamonds
4th
25th
Divisors
1st
130th
Emirp Numbers
10th
19th
Emirp Numbers (Long)
9th
58th
Evil Numbers
7th
1st8th
Evil Numbers (Long)
1st
1st6th
Factorial Factorisation
2nd
36th
Farey Sequence
47th
Fibonacci
1st
1st
Fizz Buzz
214th309th
Foo Fizz Buzz Bar
1st
150th
Fractions
1st
66th
Game of Life
57th
Gijswijt’s Sequence
46th
Happy Numbers
13th
62nd
Happy Numbers (Long)
1st
75th
Hexdump
65th
Intersection
1st
98th
Inventory Sequence
2nd
31st
ISBN
10th
83rd
Jacobi Symbol
4th
Kolakoski Constant
💎
43rd
Kolakoski Sequence
1st
8th
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
97th
Look and Say
1st
56th
Lucky Numbers
8th
40th
Lucky Tickets
1st
50th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
40th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
85th5th
PalindromemordnilaP
1st3rd63rd
Pangram Grep
1st
98th
Pascal’s Triangle
3rd
49th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
34th
Prime Numbers
1st
1st16th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
69th
Repeating Decimals
28th
Reverse Polish Notation
1st
76th
Rijndael S-box
41st
Roman to Arabic
1st
67th
ROT13
1st
64th
Rule 110
3rd
36th
Seven Segment
81st
Sierpiński Triangle
2nd
18th
Smith Numbers
69th
Spelling Numbers
6th
54th
Tic-tac-toe
1st
33rd
Tongue-twisters
102nd
Tower of Hanoi
26th
Transpose Sentence
59th
United States
Vampire Numbers
4th
65th
Van Eck Sequence
5th
53rd
Zeckendorf Representation
54th
π
6th
58th
τ
4th
56th
φ
1st
39th
√2
1st
14th
𝑒
2nd
10th