12 Days of Christmas
4th
138th
24 Game
3rd
4th
99 Bottles of Beer
145th
1st
531st
10th11th
Abundant Numbers
316th
12th
112th
12th
Abundant Numbers (Long)
164th
9th
92nd
Arabic to Roman
3rd
Arithmetic Numbers
91st
17th
17th
24th
Ascending Primes
9th6th
ASCII Table
396th
6th
brainfuck
104th
372nd
Card Number Validation
149th
Catalan Numbers
26th
232nd
9th5th
Catalan’s Constant
10th15th
7th
21st
11th
11th
6th
6th
7th
6th
4th11th
Christmas Trees
18th
10th
29th
2nd
843rd
32nd8th
Collatz
19th
24th20th
42nd
29th
28th60th
218th
23rd
8th
12th
CSS Colors
11th
Cubes
4th
15th
Day of Week
152nd
Diamonds
12th
48th
6th
93rd
9th
Divisors
33rd
458th55th
1st
1st
12th
14th
Emirp Numbers
20th
34th
13th39th
643rd
6th
Emirp Numbers (Long)
340th
Emojify
8th
84th
Evil Numbers
30th
46th
31st
628th
16th
11th
Evil Numbers (Long)
24th
19th
388th
Factorial Factorisation
19th
Farey Sequence
7th
19th
21st
231st
Fibonacci
516th
61st
7th
127th
32nd
1st
120th
82nd
68th46th
Fizz Buzz
88th43rd
758th
46th
1st152nd
9th
370th
68th
18th368th
50th21st64th46th
Foo Fizz Buzz Bar
891st
Gijswijt’s Sequence
7th
11th
Happy Numbers
8th
6th
Happy Numbers (Long)
391st
Inventory Sequence
254th
Kolakoski Constant
8th
43rd
12th
15th
14th16th
152nd
15th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
12th
389th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
32nd
Look and Say
25th
14th
12th
9th
Lucky Numbers
268th
Medal Tally
73rd
Morse Decoder
14th
154th
Morse Encoder
14th
Niven Numbers
14th
25th
46th
71st
16th
Niven Numbers (Long)
12th
489th
Number Spiral
202nd
Odious Numbers
1st
30th
318th
10th
Odious Numbers (Long)
1st
16th
233rd
Pangram Grep
3rd
Pascal’s Triangle
38th
35th
9th
Pernicious Numbers
1st
656th
10th
Pernicious Numbers (Long)
1st
287th
6th
Polyominoes
96th
Prime Numbers
1st
337th
24th
500th
129th
23rd11th
Prime Numbers (Long)
1st
254th
71st
Quine
141st
1st
83rd
Recamán
10th
10th
Reverse Polish Notation
253rd
Rijndael S-box
20th
ROT13
160th
Seven Segment
6th
Sierpiński Triangle
11th15th15th14th18th
75th42nd42nd15th12th10th
19th21st19th11th18th11th
28th15th32nd
18th15th38th121st22nd18th28th18th17th11th23rd28th27th9th349th14th33rd52nd35th8th
12th17th10th
11th8th17th
Smith Numbers
10th
9th
Sudoku
142nd
Tongue-twisters
8th
19th
225th
10th
Tower of Hanoi
6th
Trinomial Triangle
14th
United States
12th
349th
Vampire Numbers
4th
Van Eck Sequence
50th
17th
12th
γ
18th
4th
5th
λ
12th
70th51st
9th
28th12th
26th
15th
16th5th
21st
12th
12th20th
151st
19th35th19th
13th8th
10th6th
π
133rd
196th79th
44th
410th
6th
τ
12th
9th
6th
φ
15th42nd
37th16th
76th
39th22nd
365th
6th
√2
39th
6th
𝑒
29th15th23rd10th86th73rd
15th
50th33rd16th34th11th27th
17th
38th
20th
9th54th115th77th
38th12th21st7th41st25th48th13th413th98th16th70th27th
26th9th12th12th6th11th7th14th