12 Days of Christmas
4th
146th
24 Game
6th
4th
99 Bottles of Beer
146th
1st
541st
10th12th
Abundant Numbers
320th
12th
114th
12th
Abundant Numbers (Long)
169th
9th
92nd
Arabic to Roman
3rd
Arithmetic Numbers
95th
18th
19th
27th
Ascending Primes
9th6th
ASCII Table
404th
6th
brainfuck
106th
380th
Card Number Validation
154th
Catalan Numbers
27th
237th
9th5th
Catalan’s Constant
10th15th
8th
21st
11th
11th
9th
6th
7th
6th
4th11th
Christmas Trees
18th
11th
29th
2nd
845th
32nd8th
Collatz
20th
24th21st
44th
30th
28th60th
225th
23rd
8th
12th
CSS Colors
12th
Cubes
7th
17th
Day of Week
156th
Diamonds
14th
49th
6th
97th
10th
Divisors
33rd
461st55th
1st
1st
13th
14th
Emirp Numbers
20th
34th
13th39th
646th
6th
Emirp Numbers (Long)
344th
Emojify
8th
88th
Evil Numbers
30th
46th
31st
638th
16th
11th
Evil Numbers (Long)
24th
19th
401st
Factorial Factorisation
19th
Farey Sequence
8th
20th
21st
238th
Fibonacci
524th
61st
7th
130th
33rd
1st
122nd
82nd
69th46th
Fizz Buzz
89th44th
764th
46th
1st152nd
9th
371st
74th
18th369th
50th21st64th46th
Foo Fizz Buzz Bar
906th
Gijswijt’s Sequence
7th
12th
Happy Numbers
8th
6th
Happy Numbers (Long)
402nd
Inventory Sequence
258th
Kolakoski Constant
9th
45th
12th
15th
15th16th
158th
15th
7th
9th4th
Kolakoski Sequence
40th
9th
Leap Years
12th
395th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
33rd
Look and Say
25th
14th
12th
9th
Lucky Numbers
275th
Medal Tally
76th
Morse Decoder
15th
159th
Morse Encoder
15th
Niven Numbers
14th
25th
47th
74th
16th
Niven Numbers (Long)
12th
498th
Number Spiral
209th
Odious Numbers
1st
30th
327th
10th
Odious Numbers (Long)
1st
16th
241st
Pangram Grep
3rd
Pascal’s Triangle
39th
37th
9th
Pernicious Numbers
1st
662nd
10th
Pernicious Numbers (Long)
1st
290th
6th
Polyominoes
100th
Prime Numbers
1st
339th
24th
505th
132nd
23rd11th
Prime Numbers (Long)
1st
259th
72nd
Quine
144th
1st
86th
Recamán
10th
10th
Reverse Polish Notation
257th
Rijndael S-box
21st
ROT13
163rd
Seven Segment
6th
Sierpiński Triangle
11th15th15th14th19th
71st42nd42nd15th12th11th
20th21st19th12th18th11th
29th15th33rd
18th16th39th125th23rd18th28th18th17th11th24th28th28th9th353rd14th34th55th35th8th
12th17th10th
11th8th17th
Smith Numbers
10th
9th
Sudoku
147th
Tongue-twisters
11th
21st
227th
11th
Tower of Hanoi
7th
Trinomial Triangle
14th
United States
13th
358th
Vampire Numbers
4th
Van Eck Sequence
51st
17th
12th
γ
18th
8th
5th
λ
13th
71st51st
9th
28th9th
26th
15th
17th8th
22nd
12th
12th21st
156th
19th36th19th
13th8th
10th6th
π
134th
200th81st
45th
419th
6th
τ
12th
9th
6th
φ
14th42nd
46th16th
78th
40th22nd
371st
6th
√2
41st
6th
𝑒
29th15th23rd10th88th73rd
15th
50th33rd16th34th13th27th
17th
40th
23rd
10th56th120th79th
39th12th22nd7th43rd25th50th13th427th99th16th71st27th
26th9th12th12th7th11th7th14th