12 Days of Christmas
24 Game
99 Bottles of Beer
5th
Abundant Numbers
14th
15th
21st
22nd
16th
11th
14th
148th
80th
55th
13th
13th
20th
30th
29th
15th
22nd
17th
14th
18th
Abundant Numbers (Long)
10th
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
5th
ASCII Table
6th
13th
15th
14th
14th
10th
20th
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
6th
10th
Christmas Trees
Collatz
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
9th
11th
12th
13th
14th
7th
16th
70th
37th
25th
16th
16th
27th
29th
25th
16th
16th
9th
18th
20th
Emirp Numbers (Long)
7th
Emojify
Evil Numbers
17th
21st
20th
24th
20th
14th
24th
177th
99th
50th
24th
12th
30th
31st
38th
21st
19th
12th
21st
20th
Evil Numbers (Long)
12th
Factorial Factorisation
4th
Farey Sequence
Fibonacci
68th
33rd
59th
94th
45th
27th
23rd
351st
169th
127th
32nd
25th
33rd
54th
56th
39th
46th
Fizz Buzz
118th
34th
53rd
151st
34th
30th
94th
456th
411th
216th
19th
34th
23rd
50th
50th
50th
54th
44th
53rd
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
6th
Happy Numbers
9th
12th
18th
16th
16th
11th
19th
83rd
48th
29th
16th
15th
27th
23rd
26th
Happy Numbers (Long)
5th
11th
15th
Hexdump
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
8th
9th
Kolakoski Sequence
Leap Years
20th
Levenshtein Distance
Leyland Numbers
ln 2
9th
7th
Look and Say
Lucky Numbers
6th
Lucky Tickets
Mahjong
Maze
Medal Tally
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
17th
17th
21st
47th
21st
19th
21st
131st
77th
61st
22nd
20th
26th
39th
33rd
21st
25th
18th
23rd
18th
Niven Numbers (Long)
Number Spiral
3rd
9th
14th
16th
11th
9th
6th
51st
27th
22nd
7th
8th
12th
23rd
9th
18th
9th
6th
5th
8th
7th
8th
12th
17th
13th
Odious Numbers
5th
19th
22nd
23rd
20th
14th
24th
141st
81st
46th
23rd
12th
27th
36th
35th
18th
19th
10th
19th
19th
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
4th
18th
22nd
23rd
20th
16th
24th
86th
46th
32nd
20th
12th
27th
34th
29th
18th
21st
16th
19th
20th
Pernicious Numbers (Long)
Poker
Polyominoes
2nd
Prime Numbers
9th
16th
23rd
39th
22nd
15th
20th
194th
82nd
67th
22nd
21st
27th
38th
30th
21st
23rd
12th
26th
23rd
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
1st
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
5th
19th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
7th
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
13th
12th
6th
15th
11th
6th
17th
30th
37th
12th
Transpose Sentence
United States
Vampire Numbers
4th
11th
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
4th
10th
λ
10th
11th
π
12th
14th
τ
10th
12th
φ
12th
10th
√2
19th
9th
𝑒
12th
12th