12 Days of Christmas
4th
131st
24 Game
4th
99 Bottles of Beer
144th
1st
516th
10th11th
Abundant Numbers
310th
12th
107th
12th
Abundant Numbers (Long)
161st
9th
88th
Arabic to Roman
3rd
Arithmetic Numbers
88th
17th
17th
25th
Ascending Primes
9th6th
ASCII Table
387th
6th
brainfuck
101st
367th
Card Number Validation
142nd
Catalan Numbers
25th
222nd
9th5th
Catalan’s Constant
10th15th
7th
21st
11th
8th
6th
7th
6th
4th9th
Christmas Trees
17th
10th
29th
2nd
832nd
32nd8th
Collatz
19th
23rd19th
37th
29th
25th59th
207th
23rd
7th
11th
CSS Colors
10th
Cubes
15th
Day of Week
145th
Diamonds
11th
47th
6th
92nd
9th
Divisors
28th
451st54th
1st
1st
12th
13th
Emirp Numbers
20th
34th
13th38th
634th
6th
Emirp Numbers (Long)
332nd
Emojify
7th
79th
Evil Numbers
27th
45th
29th
619th
15th
11th
Evil Numbers (Long)
21st
17th
378th
Factorial Factorisation
18th
Farey Sequence
7th
19th
20th
222nd
Fibonacci
513th
59th
7th
125th
32nd
1st
119th
81st
68th46th
Fizz Buzz
87th41st
754th
45th
1st152nd
9th
368th
60th
18th368th
50th21st65th46th
Foo Fizz Buzz Bar
876th
Gijswijt’s Sequence
7th
11th
Happy Numbers
8th
6th
Happy Numbers (Long)
382nd
Inventory Sequence
243rd
Kolakoski Constant
8th
42nd
12th
15th
14th16th
146th
13th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
10th
380th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
10th
9th
Lucky Numbers
256th
Medal Tally
68th
Morse Decoder
14th
148th
Morse Encoder
13th
Niven Numbers
12th
25th
46th
68th
15th
Niven Numbers (Long)
11th
477th
Number Spiral
195th
Odious Numbers
1st
28th
310th
10th
Odious Numbers (Long)
1st
15th
229th
Pangram Grep
3rd
Pascal’s Triangle
36th
35th
9th
Pernicious Numbers
1st
650th
10th
Pernicious Numbers (Long)
1st
282nd
6th
Polyominoes
90th
Prime Numbers
1st
328th
24th
490th
126th
23rd11th
Prime Numbers (Long)
1st
246th
70th
Quine
138th
1st
76th
Recamán
9th
9th
Reverse Polish Notation
245th
Rijndael S-box
20th
ROT13
156th
Seven Segment
5th
Sierpiński Triangle
11th15th15th13th17th
73rd41st42nd15th12th10th
19th21st19th11th18th11th
28th13th32nd16th15th38th120th22nd15th27th18th17th11th23rd28th27th9th339th14th33rd50th35th8th
12th16th10th
11th7th15th
Smith Numbers
10th
9th
Sudoku
137th
Tongue-twisters
19th
220th
8th
Tower of Hanoi
4th
Trinomial Triangle
13th
United States
12th
345th
Vampire Numbers
4th
Van Eck Sequence
48th
16th
10th
γ
17th
5th
λ
12th
70th50th
9th
27th12th
27th
14th
16th
21st
12th
12th20th
146th
16th33rd18th
12th8th
10th6th
π
131st
193rd77th
43rd
404th
6th
τ
12th
9th
6th
φ
15th41st
37th15th
74th
39th22nd
358th
5th
√2
39th
6th
𝑒
29th15th22nd9th84th72nd
15th
49th32nd16th34th10th26th
16th
37th
9th53rd113th76th
38th12th21st7th41st25th45th13th405th94th15th66th26th
26th8th12th10th6th11th7th12th