12 Days of Christmas
10th
24 Game
42nd
99 Bottles of Beer
8th
Abundant Numbers
11th
Abundant Numbers (Long)
37th
Arabic to Roman
10th
Arithmetic Numbers
23rd
Arrows
26th
Ascending Primes
38th
ASCII Table
17th
Billiards
14th
brainfuck
17th
Calendar
1st
Card Number Validation
18th
Catalan Numbers
1st
Catalan’s Constant
43rd
Christmas Trees
8th
Collatz
130th
Connect Four
23rd
Continued Fractions
1st
CSS Colors
6th
Cubes
3rd
Day of Week
1st
DFA Simulator
17th
Diamonds
64th
Divisors
25th
Emirp Numbers
19th
Emirp Numbers (Long)
14th
Emojify
39th
Evil Numbers
1st
Evil Numbers (Long)
1st
Factorial Factorisation
26th
Farey Sequence
37th
Fibonacci
1st
Fizz Buzz
1st
Foo Fizz Buzz Bar
1st
Forsyth–Edwards Notation
19th
Fractions
1st
Game of Life
26th
Gijswijt’s Sequence
22nd
Gray Code Decoder
26th
Gray Code Encoder
1st
Happy Numbers
1st
Happy Numbers (Long)
43rd
Hexdump
4th
Hilbert Curve
24th
Intersection
39th
Inventory Sequence
40th
ISBN
25th
Jacobi Symbol
21st
Kaprekar Numbers
11th
Kolakoski Constant
35th
Kolakoski Sequence
25th
Leap Years
23rd
Levenshtein Distance
1st
Leyland Numbers
1st
ln 2
1st
Look and Say
12th
Lucky Numbers
19th
Lucky Tickets
55th
Mahjong
20th
Mandelbrot
14th
Maze
46th
Medal Tally
31st
Minesweeper
23rd
Morse Decoder
16th
Morse Encoder
18th
Multitap Input
9th
Musical Chords
18th
N Queens
35th
Nim
23rd
Niven Numbers
1st
Niven Numbers (Long)
24th
Number Spiral
48th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
8th
PalindromemordnilaP
42nd
Pangram Grep
36th
Partition Numbers
3rd
Pascal’s Triangle
1st
Pernicious Numbers
88th
Pernicious Numbers (Long)
1st
Poker
10th
Polyominoes
15th
Prime Numbers
1st
Prime Numbers (Long)
1st
Proximity Grid
8th
QR Decoder
24th
Quine
1st
Recamán
71st
Repeating Decimals
1st
Reverse Polish Notation
31st
Reversi
46th
Rijndael S-box
23rd
Rock-paper-scissors-Spock-lizard
14th
Roman to Arabic
28th
ROT13
1st
Rule 110
15th
Scrambled Sort
14th
Semiprime Numbers
18th
Set
20th
Seven Segment
5th
SI Units
14th
Sierpiński Triangle
19th
Smith Numbers
23rd
Snake
14th
Spelling Numbers
26th
Sphenic Numbers
15th
Star Wars GPT
40th
Star Wars Opening Crawl
16th
Sudoku
15th
Sudoku (Fill-in)
18th
Taxicab Numbers
57th
Ten-pin Bowling
40th
Tic-tac-toe
23rd
Time Distance
36th
Tongue-twisters
15th
Topological Sort
34th
Tower of Hanoi
38th
Transpose Sentence
26th
Trinomial Triangle
1st
Ulam Sequence
35th
United States
61st
Vampire Numbers
15th
Van Eck Sequence
29th
Zeckendorf Representation
6th
Zodiac Signs
22nd
γ
24th
λ
19th
π
23rd
τ
16th
φ
1st
√2
1st
𝑒
1st