12 Days of Christmas
10th15th45th21st22nd13th
18th6th
9th
12th10th28th8th
9th28th41st
9th7th9th6th
17th
81st
55th
8th
25th11th
16th
24 Game
8th
7th
8th
6th
7th
99 Bottles of Beer
23rd
54th
19th
9th
33rd
5th
10th
77th
17th
Abundant Numbers
17th
20th
14th
26th
8th
Abundant Numbers (Long)
21st
19th
12th
27th
Arabic to Roman
11th1st
22nd
15th
Arithmetic Numbers
23rd
88th
23rd
Arrows
18th
46th
Ascending Primes
8th
10th28th
2nd
7th
42nd
16th
1st
ASCII Table
8th
19th
44th
1st
9th
1st
34th
brainfuck
20th
19th
55th
Catalan Numbers
25th
8th
1st
Catalan’s Constant
14th
20th
1st
5th
83rd
Christmas Trees
29th
20th
50th
9th
83rd
26th
Collatz
27th
4th
104th
CSS Colors
21st
1st5th
28th
63rd
Cubes
13th
9th
70th
4th
18th
6th
Day of Week
30th
1st
75th
DFA Simulator
18th
35th
Diamonds
21st
7th
61st
30th
7th
16th
92nd
Divisors
11th
25th
33rd
17th
1st
33rd
Emirp Numbers
11th
6th
17th
32nd
Emirp Numbers (Long)
27th
7th
112th
14th
31st
Emojify
15th
4th
39th
Evil Numbers
5th
65th
1st
12th
1st
23rd
13th
Evil Numbers (Long)
17th
34th
1st
15th
33rd
11th
Factorial Factorisation
9th
10th
14th
21st
23rd
Farey Sequence
13th
19th
15th
Fibonacci
30th
9th
27th8th126th53rd
3rd
30th
1st36th
25th
1st1st32nd
1st
41st27th27th
1st
29th
7th60th
31st
1st
Fizz Buzz
55th
1st
1st
1st
9th
9th
1st
79th
Foo Fizz Buzz Bar
26th
12th
1st
Forsyth–Edwards Notation
18th
36th
Fractions
26th
14th
58th
1st
Game of Life
21st
6th
66th
Gijswijt’s Sequence
15th
44th
Happy Numbers
8th
62nd
9th
1st
9th
Happy Numbers (Long)
15th
8th
17th
Hexdump
13th
6th
1st
Intersection
23rd
22nd
56th
6th
Inventory Sequence
9th
19th
8th
41st
ISBN
9th
30th
18th
Jacobi Symbol
19th
1st
65th
Kolakoski Constant
14th
13th
5th
37th
3rd
7th
Kolakoski Sequence
23rd
19th
7th
69th
48th
Leap Years
5th
13th
5th
1st
19th
5th
74th
13th
65th
Levenshtein Distance
36th
1st
1st
20th13th
21st
Leyland Numbers
4th
8th
7th
ln 2
1st
1st
1st
Look and Say
16th
103rd
9th
14th
21st
Lucky Numbers
14th
58th
7th
7th
20th
Lucky Tickets
19th
45th
Mahjong
Maze
18th
55th
Medal Tally
9th
7th
Morse Decoder
20th
63rd
Morse Encoder
2nd
2nd
Musical Chords
12th16th
15th
6th
40th
Niven Numbers
20th
1st
39th
17th
1st
Niven Numbers (Long)
17th
34th
12th
37th
Number Spiral
13th9th
15th
18th
17th
5th
36th
5th
Odious Numbers
4th
54th
1st
12th
1st
19th
Odious Numbers (Long)
5th
31st
1st
13th
1st
11th
Ordinal Numbers
13th
4th
1st
Pangram Grep
21st
26th50th
44th
220th
12th
40th
34th
17th
98th
34th
Pascal’s Triangle
27th
11th
1st
13th45th
1st
17th
Pernicious Numbers
38th
1st
15th
175th
46th
Pernicious Numbers (Long)
29th
1st
10th
85th
17th
Poker
7th
13th
Prime Numbers
11th
40th27th
18th
1st
12th
1st
27th
7th
Prime Numbers (Long)
19th
19th
1st
13th
45th
Proximity Grid
22nd
74th
QR Decoder
15th
39th
Quine
1st19th23rd1st19th9th2nd99th133rd72nd21st12th2nd1st22nd28th4th1st12th27th1st
1st
75th3rd4th9th74th182nd64th
1st21st1st1st1st57th
38th1st4th77th
1st101st
5th1st8th12th6th27th
25th25th
Recamán
13th
8th
4th
Repeating Decimals
1st
Reverse Polish Notation
24th
1st
62nd
92nd
Rijndael S-box
36th
13th
7th
4th
24th
2nd
Rock-paper-scissors-Spock-lizard
16th
16th
114th
76th
Roman to Arabic
22nd
7th
32nd
13th
Rule 110
12th26th
11th
9th
21st
36th
Seven Segment
17th
33rd
17th
SI Units
6th
14th
Sierpiński Triangle
10th30th
13th
18th
8th
39th
12th
Smith Numbers
9th
14th
8th
31st
Spelling Numbers
28th1st
135th
Star Wars Opening Crawl
18th
40th
17th
Sudoku
8th
13th
Sudoku (Fill-in)
15th
46th
Ten-pin Bowling
17th
43rd
Time Distance
15th
20th
Tongue-twisters
12th
12th
29th
6th
16th
15th
4th
10th
United States
11th
11th1st
Vampire Numbers
6th
5th
18th
Van Eck Sequence
6th
8th
12th
57th
8th
1st
6th
Zodiac Signs
23rd
83rd
γ
12th
1st
6th
4th
λ
21st
9th
10th32nd
48th4th
6th
21st
3rd
5th
π
24th
9th
1st
6th
4th25th
13th
20th
6th
τ
20th
15th
46th
6th
4th
39th
5th
φ
14th
32nd
1st
6th
1st
163rd
5th
√2
25th
1st
6th
1st
1st
5th
𝑒
24th
1st
1st
5th
26th
1st32nd15th
6th