12 Days of Christmas
19th
26th
23rd
7th
2nd31st
52nd
10th
99 Bottles of Beer
17th
22nd
18th
12th
7th27th
41st
10th
Abundant Numbers
23rd
13th
22nd
9th
7th
52nd
16th
Abundant Numbers (Long)
7th
Arabic to Roman
💎
27th
Arithmetic Numbers
3rd
Arrows
14th
13th
6th
Ascending Primes
4th
ASCII Table
16th
11th
83rd
6th
39th
13th
brainfuck
4th
37th
Card Number Validation
8th
Catalan Numbers
9th
19th
7th
3rd
25th
7th
Catalan’s Constant
9th
6th
4th
5th
7th
Christmas Trees
16th
44th
10th
6th
4th10th
40th
11th
Collatz
8th
19th
8th
5th
55th
10th
CSS Colors
4th
25th
Cubes
12th
19th
8th
3rd
2nd
28th
10th
Day of Week
1st
Diamonds
13th
27th
9th
4th
4th21st
31st
10th
Divisors
16th
22nd
25th
15th
1st36th
42nd
10th
Emirp Numbers
16th
11th
13th
8th
28th
4th19th
100th
55th
23rd
Emirp Numbers (Long)
6th
6th
Emojify
8th
Evil Numbers
32nd
25th
15th
12th
16th32nd
135th
25th
23rd
Evil Numbers (Long)
4th
Factorial Factorisation
5th
Farey Sequence
20th
Fibonacci
51st
22nd128th
40th
24th
300th
1st51st
806th
63rd
16th
Fizz Buzz
50th
88th
62nd
81st
1,041st
1st107th
1,435th
1st
25th
Foo Fizz Buzz Bar
10th
15th
8th
15th
10th
Forsyth–Edwards Notation
3rd
Fractions
107th
1st
270th
1st
Game of Life
10th
Gijswijt’s Sequence
2nd
Happy Numbers
17th
20th
12th
8th
6th21st
136th
30th
21st
Happy Numbers (Long)
6th
11th
6th
6th
149th
21st
7th
Hexdump
4th
Intersection
53rd
💎
225th
15th
Inventory Sequence
7th
ISBN
7th
28th
Jacobi Symbol
4th
Kaprekar Numbers
7th
Kolakoski Constant
6th17th8th8th40th24th
12th22nd12th6th6th16th20th14th3rd8th23rd52nd15th
6th6th4th14th16th33rd
140th14th25th12th7th8th7th8th22nd
Kolakoski Sequence
17th
16th
9th
7th
13th
7th
43rd
1st
215th
27th
17th
Leap Years
20th
15th
25th
10th
1st
4th24th
54th
3rd
11th
Levenshtein Distance
4th
54th
Leyland Numbers
14th
6th
12th
5th
2nd
34th
8th
ln 2
5th
Look and Say
16th
20th
13th
3rd
8th
38th
14th
Lucky Numbers
5th
9th
3rd
9th
9th
Lucky Tickets
4th
23rd
Maze
8th
Medal Tally
6th
Morse Decoder
4th
31st
Morse Encoder
4th
35th
Musical Chords
4th
16th
N Queens
9th
Niven Numbers
24th
22nd
24th
9th
1st38th
42nd
21st
Niven Numbers (Long)
4th
Number Spiral
6th
8th
5th
9th
25th
13th
Odious Numbers
28th
24th
14th
10th
17th33rd
99th
22nd
23rd
Odious Numbers (Long)
4th
Ordinal Numbers
11th
48th
PalindromemordnilaP
11th
Pangram Grep
6th
81st
Partition Numbers
13th
Pascal’s Triangle
13th
9th
13th
7th
1st21st
32nd
10th
Pernicious Numbers
25th
15th
20th
10th
1st
1st36th
1st
21st
21st
Pernicious Numbers (Long)
10th
Poker
3rd
Polyominoes
5th
Prime Numbers
24th
12th
15th
11th
1st
1st41st
157th
62nd
23rd
Prime Numbers (Long)
8th
15th
9th
11th
43rd
8th
Proximity Grid
2nd
QR Decoder
26th
4th
14th
Quine
1st
2nd
13th
30th
1st
72nd
97th
Recamán
13th
5th
10th
6th
14th
6th
25th
9th
Repeating Decimals
3rd
Reverse Polish Notation
11th
Rijndael S-box
7th
Rock-paper-scissors-Spock-lizard
3rd
20th
Roman to Arabic
11th
34th
ROT13
3rd
Rule 110
11th
19th
6th
4th
9th
36th
12th
Seven Segment
8th
SI Units
2nd
Sierpiński Triangle
16th
20th
11th
6th
10th
27th
10th
Smith Numbers
6th
7th
4th
35th
8th
Spelling Numbers
4th
24th
Star Wars Opening Crawl
2nd
Sudoku
5th
Sudoku (Fill-in)
4th
Ten-pin Bowling
4th
24th
Tic-tac-toe
5th
Time Distance
3rd
Tongue-twisters
29th
9th
16th
5th
7th
30th
12th
Tower of Hanoi
13th
Transpose Sentence
13th
United States
8th
Vampire Numbers
14th
7th
6th
3rd
37th
8th
Van Eck Sequence
17th
5th
7th
7th
42nd
1st
101st
19th
8th
Zodiac Signs
5th
γ
4th
λ
4th22nd12th10th69th40th26th14th27th12th6th8th21st31st16th9th8th26th98th20th
9th12th6th12th20th45th9th142nd15th32nd17th11th12th8th10th29th
π
9th35th11th12th103rd73rd
14th33rd15th8th10th21st48th32nd5th28th55th211th91st
5th11th5th52nd25th68th
492nd37th47th19th9th14th14th9th41st
τ
9th22nd10th10th55th42nd
13th31st13th8th8th15th37th19th7th25th42nd113th77th
5th8th5th41st19th44th
274th22nd38th14th9th9th8th9th24th
φ
10th20th41st12th54th44th
14th37th15th8th10th16th46th30th5th32nd40th94th73rd
10th7th5th39th22nd42nd
351st26th46th17th10th9th10th12th24th
√2
16th25th43rd12th65th50th
13th30th15th8th12th18th52nd31st6th28th60th107th61st
4th7th5th38th17th48th
179th20th44th15th10th10th9th14th26th
𝑒
11th31st13th13th78th56th
13th32nd15th10th10th20th43rd33rd6th31st39th113th74th
8th11th7th41st25th51st
276th32nd66th25th8th8th12th11th33rd