12 Days of Christmas
28th
99 Bottles of Beer
12th
Abundant Numbers
10th
Abundant Numbers (Long)
9th
Alphabetic Numbers
18th
Arabic to Roman
1st
Arithmetic Numbers
10th
Arrows
10th
Ascending Primes
7th
ASCII Table
15th
Card Number Validation
8th
Catalan Numbers
1st
Catalan’s Constant
12th
Christmas Trees
9th
Collatz
12th
CSS Colors
10th
Cubes
7th
Day of Week
7th
Diamonds
10th
Divisors
13th
Emirp Numbers
23rd
Emirp Numbers (Long)
7th
96th
Evil Numbers
1st
Evil Numbers (Long)
1st
Factorial Factorisation
7th
Farey Sequence
16th
Fibonacci
40th
Fizz Buzz
52nd
1st
585th
Foo Fizz Buzz Bar
10th
129th
Forsyth–Edwards Notation
7th
Fractions
12th
Gijswijt’s Sequence
172nd
Happy Numbers
29th
Happy Numbers (Long)
15th
Intersection
8th
Inventory Sequence
9th
ISBN
10th
Jacobi Symbol
8th
Kolakoski Constant
12th
Kolakoski Sequence
11th
Leap Years
15th
Levenshtein Distance
7th
Leyland Numbers
12th
ln 2
11th
Look and Say
9th
Lucky Numbers
12th
Lucky Tickets
8th
Morse Decoder
8th
Morse Encoder
5th
N Queens
5th
Niven Numbers
31st
Niven Numbers (Long)
11th
Number Spiral
11th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
12th
PalindromemordnilaP
10th
Pangram Grep
6th
Partition Numbers
9th
Pascal’s Triangle
21st
Pernicious Numbers
27th
Pernicious Numbers (Long)
18th
Prime Numbers
31st
Prime Numbers (Long)
12th
Quine
1st225th26th223rd158th68th88th26th27th1st81st65th96th332nd1st154th24th28th1st95th44th75th29th47th
Recamán
10th
Repeating Decimals
4th
Reverse Polish Notation
8th
Rijndael S-box
5th
Rock-paper-scissors-Spock-lizard
9th
Roman to Arabic
9th
Scrambled Sort
6th
Seven Segment
9th
Sierpiński Triangle
10th
Smith Numbers
7th
Spelling Numbers
1st
Sphenic Numbers
4th
Star Wars Opening Crawl
5th
Taxicab Numbers
5th
Tic-tac-toe
4th
Time Distance
6th
Tongue-twisters
9th
Tower of Hanoi
11th
Transpose Sentence
8th
Trinomial Triangle
9th
Ulam Sequence
4th
United States
8th
Van Eck Sequence
9th
λ
14th
π
20th
τ
21st
φ
35th
√2
13th
𝑒
20th