12 Days of Christmas
12th
15th
25th
15th
13th
38th
145th
132nd
94th
10th
15th
9th
33rd
23rd
17th
14th
21st
11th
12th
5th
24 Game
5th
8th
8th
5th
11th
16th
26th
15th
15th
10th
4th
4th
21st
10th
7th
7th
4th
6th
6th
3rd
99 Bottles of Beer
14th
15th
29th
17th
11th
41st
154th
141st
89th
11th
8th
9th
33rd
19th
19th
21st
14th
14th
12th
7th
Abundant Numbers
19th
25th
24th
19th
20th
34th
206th
132nd
109th
17th
15th
19th
39th
36th
22nd
31st
19th
18th
18th
10th
Abundant Numbers (Long)
11th
23rd
18th
17th
18th
17th
97th
59th
75th
18th
15th
10th
41st
28th
21st
30th
13th
14th
16th
9th
Arabic to Roman
Arithmetic Numbers
9th
16th
12th
12th
22nd
Arrows
Ascending Primes
7th
12th
11th
7th
13th
14th
37th
22nd
27th
15th
11th
10th
26th
12th
13th
13th
3rd
8th
11th
4th
ASCII Table
11th
19th
14th
12th
17th
32nd
106th
56th
57th
11th
8th
9th
39th
18th
15th
14th
10th
6th
brainfuck
Catalan Numbers
19th
10th
8th
7th
10th
22nd
27th
35th
25th
19th
13th
10th
41st
23rd
17th
13th
14th
9th
18th
5th
Catalan’s Constant
8th
18th
19th
14th
14th
29th
37th
28th
27th
8th
4th
10th
26th
10th
21st
17th
9th
7th
9th
12th
10th
13th
7th
11th
6th
13th
6th
31st
49th
11th
60th
Christmas Trees
12th
15th
16th
10th
13th
45th
106th
106th
45th
11th
8th
7th
37th
28th
16th
19th
8th
12th
11th
5th
Collatz
16th
32nd
24th
18th
22nd
20th
203rd
98th
119th
20th
15th
10th
44th
24th
22nd
30th
15th
15th
15th
9th
CSS Colors
Cubes
7th
10th
10th
7th
13th
24th
53rd
43rd
24th
11th
5th
5th
28th
15th
10th
10th
6th
6th
7th
3rd
Day of Week
Diamonds
11th
16th
11th
10th
14th
32nd
84th
62nd
46th
12th
7th
8th
35th
56th
13th
18th
7th
7th
11th
5th
Divisors
25th
31st
69th
20th
23rd
33rd
288th
152nd
98th
17th
17th
13th
55th
38th
24th
29th
21st
25th
16th
13th
Emirp Numbers
15th
20th
13th
9th
14th
34th
86th
48th
37th
15th
10th
26th
37th
26th
19th
17th
10th
10th
20th
5th
Emirp Numbers (Long)
8th
16th
12th
10th
13th
17th
46th
37th
33rd
12th
10th
8th
34th
16th
14th
15th
8th
8th
16th
4th
Emojify
Evil Numbers
23rd
25th
24th
16th
22nd
37th
202nd
116th
89th
22nd
14th
27th
45th
44th
28th
25th
14th
15th
20th
13th
Evil Numbers (Long)
13th
25th
20th
15th
19th
15th
103rd
71st
66th
21st
15th
12th
43rd
34th
21st
25th
13th
13th
20th
10th
Factorial Factorisation
6th
12th
16th
12th
12th
17th
39th
20th
Farey Sequence
5th
17th
13th
11th
19th
13th
44th
26th
32nd
18th
13th
7th
34th
14th
16th
17th
7th
9th
7th
5th
Fibonacci
84th
65th
150th
49th
49th
62nd
500th
280th
242nd
35th
38th
26th
67th
75th
63rd
63rd
34th
59th
26th
26th
Fizz Buzz
119th
68th
186th
51st
42nd
112th
665th
499th
Foo Fizz Buzz Bar
11th
28th
32nd
18th
20th
20th
110th
112th
87th
17th
13th
12th
45th
23rd
26th
22nd
12th
12th
15th
14th
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
8th
9th
11th
6th
14th
15th
20th
19th
19th
12th
9th
7th
25th
9th
12th
12th
8th
8th
8th
4th
Happy Numbers
16th
25th
16th
11th
17th
30th
96th
57th
42nd
15th
8th
25th
34th
27th
17th
16th
10th
12th
17th
12th
Happy Numbers (Long)
8th
21st
15th
14th
17th
16th
67th
39th
33rd
16th
11th
8th
34th
23rd
17th
16th
9th
7th
12th
10th
Hexdump
Intersection
Inventory Sequence
8th
20th
16th
10th
15th
17th
41st
29th
34th
17th
8th
7th
35th
20th
15th
13th
6th
9th
10th
5th
ISBN
Jacobi Symbol
Kolakoski Constant
8th
17th
24th
14th
13th
29th
34th
23rd
22nd
10th
5th
13th
27th
10th
17th
18th
9th
6th
10th
13th
15th
14th
10th
14th
7th
17th
7th
28th
53rd
10th
26th
Kolakoski Sequence
17th
15th
18th
8th
17th
29th
54th
33rd
32nd
9th
7th
10th
34th
20th
17th
17th
7th
8th
11th
7th
13th
26th
14th
33rd
8th
24th
7th
33rd
108th
9th
25th
Leap Years
23rd
28th
56th
19th
22nd
31st
254th
146th
90th
20th
15th
17th
42nd
39th
28th
29th
22nd
28th
21st
11th
Levenshtein Distance
Leyland Numbers
7th
14th
9th
7th
13th
19th
35th
41st
27th
13th
9th
8th
40th
17th
13th
9th
8th
6th
12th
4th
ln 2
10th
15th
22nd
13th
14th
23rd
26th
24th
25th
12th
5th
Look and Say
9th
15th
14th
9th
12th
23rd
40th
41st
34th
17th
12th
10th
31st
27th
15th
11th
9th
6th
12th
6th
Lucky Numbers
7th
11th
8th
8th
13th
15th
38th
28th
24th
13th
5th
11th
33rd
17th
13th
10th
8th
5th
9th
5th
Lucky Tickets
Maze
Morse Decoder
Morse Encoder
Musical Chords
N Queens
3rd
9th
9th
5th
10th
9th
22nd
19th
Niven Numbers
21st
25th
47th
19th
25th
29th
151st
104th
72nd
23rd
15th
25th
46th
41st
27th
31st
20th
19th
18th
12th
Niven Numbers (Long)
9th
21st
20th
15th
21st
15th
70th
57th
55th
21st
15th
9th
44th
30th
19th
22nd
15th
15th
18th
11th
Number Spiral
5th
15th
7th
8th
16th
17th
53rd
31st
27th
13th
8th
8th
33rd
16th
21st
17th
7th
5th
9th
5th
Odious Numbers
22nd
27th
23rd
16th
19th
32nd
155th
90th
72nd
22nd
15th
26th
43rd
41st
26th
25th
12th
15th
19th
13th
Odious Numbers (Long)
11th
27th
20th
15th
19th
14th
83rd
62nd
55th
20th
15th
11th
43rd
32nd
20th
24th
13th
12th
20th
10th
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
9th
21st
20th
13th
16th
24th
111th
59th
48th
19th
13th
9th
43rd
19th
15th
17th
8th
13th
14th
9th
Pernicious Numbers
15th
27th
23rd
18th
21st
32nd
109th
63rd
51st
24th
14th
26th
42nd
37th
24th
27th
18th
20th
20th
14th
Pernicious Numbers (Long)
7th
18th
15th
11th
14th
16th
46th
33rd
36th
14th
12th
11th
40th
22nd
17th
17th
10th
10th
20th
9th
Poker
Polyominoes
6th
7th
8th
5th
8th
9th
11th
10th
Prime Numbers
29th
28th
39th
16th
22nd
42nd
234th
111th
103rd
21st
11th
26th
47th
32nd
26th
30th
14th
17th
23rd
10th
Prime Numbers (Long)
17th
26th
14th
18th
22nd
18th
125th
75th
83rd
18th
17th
10th
45th
29th
22nd
25th
12th
16th
23rd
11th
Proximity Grid
QR Decoder
Recamán
12th
18th
14th
8th
16th
21st
61st
43rd
43rd
18th
8th
10th
36th
22nd
14th
12th
7th
7th
10th
6th
Reverse Polish Notation
Reversi
Rijndael S-box
7th
10th
14th
8th
13th
18th
49th
32nd
23rd
10th
9th
11th
24th
19th
12th
13th
5th
13th
9th
6th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
4th
11th
9th
9th
10th
Seven Segment
SI Units
Sierpiński Triangle
7th
17th
13th
12th
15th
24th
71st
39th
35th
13th
8th
9th
35th
26th
19th
15th
10th
12th
9th
6th
Smith Numbers
10th
11th
9th
9th
14th
18th
43rd
32nd
28th
13th
7th
9th
28th
16th
12th
11th
5th
5th
13th
6th
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
15th
16th
20th
7th
16th
27th
66th
52nd
38th
12th
7th
13th
33rd
25th
16th
17th
18th
6th
12th
10th
United States
Vampire Numbers
11th
10th
6th
8th
11th
20th
47th
39th
25th
11th
7th
14th
30th
16th
10th
7th
6th
5th
10th
4th
Van Eck Sequence
8th
16th
11th
8th
13th
19th
54th
40th
34th
18th
8th
10th
33rd
18th
14th
15th
4th
7th
12th
4th
Zodiac Signs
γ
5th
20th
24th
15th
16th
30th
42nd
25th
27th
7th
4th
λ
12th
19th
39th
19th
16th
53rd
56th
31st
30th
8th
5th
15th
26th
10th
18th
18th
8th
7th
9th
15th
16th
25th
9th
14th
9th
14th
7th
32nd
87th
11th
38th
π
14th
27th
63rd
18th
14th
70th
85th
60th
45th
14th
6th
16th
37th
12th
31st
25th
11th
10th
11th
17th
22nd
34th
17th
30th
10th
36th
6th
64th
179th
10th
106th
τ
11th
18th
30th
19th
13th
49th
45th
33rd
27th
14th
5th
15th
34th
11th
20th
17th
11th
8th
11th
15th
15th
29th
15th
19th
9th
29th
6th
42nd
95th
10th
78th
φ
13th
19th
38th
19th
15th
47th
45th
37th
27th
13th
9th
17th
39th
14th
21st
20th
11th
10th
11th
15th
18th
34th
18th
28th
8th
32nd
6th
39th
80th
10th
78th
√2
20th
18th
37th
18th
13th
46th
57th
43rd
30th
13th
9th
15th
42nd
14th
25th
21st
11th
12th
12th
13th
17th
43rd
14th
28th
8th
32nd
6th
55th
88th
10th
70th
𝑒
13th
34th
54th
18th
19th
58th
65th
48th
43rd
14th
8th
16th
42nd
13th
29th
24th
13th
9th
13th
17th
20th
32nd
14th
30th
11th
38th
6th
38th
95th
12th
87th