12 Days of Christmas
4th
136th
24 Game
4th
99 Bottles of Beer
145th
1st
526th
10th11th
Abundant Numbers
313th
12th
112th
12th
Abundant Numbers (Long)
161st
9th
91st
Arabic to Roman
3rd
Arithmetic Numbers
91st
17th
17th
24th
Ascending Primes
9th6th
ASCII Table
394th
6th
brainfuck
102nd
369th
Card Number Validation
147th
Catalan Numbers
26th
231st
9th5th
Catalan’s Constant
10th15th
7th
21st
11th
11th
6th
7th
6th
4th9th
Christmas Trees
18th
10th
29th
2nd
839th
33rd8th
Collatz
19th
23rd19th
40th
29th
27th60th
215th
23rd
7th
11th
CSS Colors
11th
Cubes
15th
Day of Week
150th
Diamonds
12th
48th
6th
92nd
9th
Divisors
33rd
453rd54th
1st
1st
12th
14th
Emirp Numbers
20th
34th
13th38th
641st
6th
Emirp Numbers (Long)
339th
Emojify
8th
83rd
Evil Numbers
30th
45th
31st
627th
15th
11th
Evil Numbers (Long)
24th
18th
385th
Factorial Factorisation
18th
Farey Sequence
7th
19th
21st
226th
Fibonacci
515th
60th
7th
127th
32nd
1st
121st
83rd
68th46th
Fizz Buzz
88th43rd
757th
46th
1st152nd
9th
369th
66th
18th368th
50th21st64th46th
Foo Fizz Buzz Bar
884th
Gijswijt’s Sequence
7th
11th
Happy Numbers
8th
6th
Happy Numbers (Long)
388th
Inventory Sequence
251st
Kolakoski Constant
8th
42nd
12th
15th
14th16th
149th
15th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
11th
386th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
12th
9th
Lucky Numbers
265th
Medal Tally
72nd
Morse Decoder
14th
153rd
Morse Encoder
14th
Niven Numbers
14th
25th
46th
71st
16th
Niven Numbers (Long)
12th
488th
Number Spiral
201st
Odious Numbers
1st
30th
316th
10th
Odious Numbers (Long)
1st
16th
232nd
Pangram Grep
3rd
Pascal’s Triangle
38th
35th
9th
Pernicious Numbers
1st
655th
10th
Pernicious Numbers (Long)
1st
285th
6th
Polyominoes
92nd
Prime Numbers
1st
332nd
24th
497th
128th
23rd11th
Prime Numbers (Long)
1st
250th
71st
Quine
140th
1st
82nd
Recamán
10th
9th
Reverse Polish Notation
252nd
Rijndael S-box
20th
ROT13
159th
Seven Segment
6th
Sierpiński Triangle
11th15th15th14th18th
74th41st42nd15th12th10th
19th21st19th11th18th11th
28th14th32nd18th15th38th120th22nd17th28th18th17th11th23rd28th27th9th348th14th33rd52nd35th8th
12th16th10th
11th8th16th
Smith Numbers
10th
9th
Sudoku
139th
Tongue-twisters
19th
225th
9th
Tower of Hanoi
5th
Trinomial Triangle
14th
United States
12th
348th
Vampire Numbers
4th
Van Eck Sequence
50th
16th
10th
γ
18th
5th
λ
12th
70th51st
9th
27th12th
26th
15th
16th
21st
12th
12th20th
149th
19th33rd19th
13th8th
10th6th
π
132nd
194th79th
44th
408th
6th
τ
12th
9th
6th
φ
15th42nd
37th16th
76th
39th22nd
365th
6th
√2
39th
6th
𝑒
29th15th23rd10th86th73rd
15th
49th33rd16th34th11th27th
17th
38th
9th53rd115th77th
38th12th21st7th41st25th48th13th413th96th16th68th27th
26th9th12th12th6th11th7th12th