12 Days of Christmas
5th
167th
99 Bottles of Beer
2nd
136th
Abundant Numbers
1st
15th
Abundant Numbers (Long)
1st
83rd
Arabic to Roman
74th
Arithmetic Numbers
4th
Ascending Primes
22nd
ASCII Table
1st
59th
Billiards
32nd
Card Number Validation
38th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
30th
Christmas Trees
1st
92nd
Collatz
2nd
116th
Cubes
💎
74th
Diamonds
4th
25th
Divisors
1st
126th
Emirp Numbers
9th
17th
Emirp Numbers (Long)
9th
54th
Evil Numbers
7th
1st8th
Evil Numbers (Long)
1st
1st5th
Factorial Factorisation
2nd
33rd
Farey Sequence
45th
Fibonacci
1st
1st
Fizz Buzz
213th306th
Foo Fizz Buzz Bar
1st
149th
Fractions
1st
64th
Game of Life
55th
Gijswijt’s Sequence
47th
Happy Numbers
12th
60th
Happy Numbers (Long)
1st
72nd
Hexdump
63rd
Intersection
1st
95th
Inventory Sequence
2nd
30th
ISBN
10th
82nd
Jacobi Symbol
4th
Kolakoski Constant
💎
41st
Kolakoski Sequence
1st
7th
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
93rd
Look and Say
1st
55th
Lucky Numbers
8th
39th
Lucky Tickets
1st
49th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
38th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
85th5th
PalindromemordnilaP
1st3rd57th
Pangram Grep
1st
98th
Pascal’s Triangle
3rd
49th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
32nd
Prime Numbers
1st
1st16th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
66th
Repeating Decimals
27th
Reverse Polish Notation
1st
74th
Rijndael S-box
39th
Roman to Arabic
1st
66th
ROT13
1st
63rd
Rule 110
3rd
34th
Seven Segment
79th
Sierpiński Triangle
2nd
18th
Smith Numbers
64th
Spelling Numbers
6th
53rd
Tic-tac-toe
1st
32nd
Tongue-twisters
100th
Tower of Hanoi
20th
Transpose Sentence
55th
United States
Vampire Numbers
3rd
62nd
Van Eck Sequence
5th
50th
Zeckendorf Representation
53rd
π
6th
56th
τ
4th
54th
φ
1st
38th
√2
1st
1st
𝑒
2nd
1st