12 Days of Christmas
6th
470th
99 Bottles of Beer
8th
Abundant Numbers
13th
84th
Abundant Numbers (Long)
11th
ASCII Table
9th
brainfuck
9th
Card Number Validation
1st
Catalan Numbers
5th
Catalan’s Constant
9th
Christmas Trees
7th
Collatz
9th
161st
CSS Colors
6th
Cubes
8th
Day of Week
6th
Diamonds
10th
Divisors
5th
1st
Emirp Numbers
9th
Emojify
5th
Evil Numbers
10th
798th
Farey Sequence
8th
Fibonacci
7th
Fizz Buzz
53rd
21st
494th
Happy Numbers
6th
ISBN
3rd
90th
Kaprekar Numbers
5th
Kolakoski Constant
8th
Kolakoski Sequence
12th
Leap Years
5th
Levenshtein Distance
6th
42nd
Leyland Numbers
7th
Lucky Numbers
55th
Lucky Tickets
Morse Encoder
4th
Niven Numbers
9th
Odious Numbers
10th
Ordinal Numbers
11th
Pangram Grep
6th79th
Pascal’s Triangle
10th
Prime Numbers
11th
136th
Quine
1st27th
56th
Recamán
10th
20th
Rijndael S-box
3rd
Rock-paper-scissors-Spock-lizard
9th
Roman to Arabic
4th
ROT13
3rd
Sierpiński Triangle
7th
Smith Numbers
4th
203rd
Tongue-twisters
5th
Transpose Sentence
3rd
United States
23rd
Vampire Numbers
6th
Van Eck Sequence
7th
Zeckendorf Representation
3rd
λ
11th
43rd
π
11th
τ
10th
φ
9th
√2
9th
𝑒
13th