12 Days of Christmas
6th
151st
24 Game
7th
4th
99 Bottles of Beer
149th
1st
547th
10th12th
Abundant Numbers
322nd
12th
116th
12th
Abundant Numbers (Long)
171st
9th
95th
Arabic to Roman
4th
Arithmetic Numbers
95th
18th
20th
27th
Ascending Primes
9th6th
ASCII Table
412th
6th
brainfuck
107th
386th
Card Number Validation
155th
Catalan Numbers
28th
245th
9th5th
Catalan’s Constant
10th17th
9th
23rd
11th
11th
12th
6th
7th
6th
4th11th
Christmas Trees
18th
10th
29th
2nd
851st
32nd9th
Collatz
20th
24th21st
44th
31st
31st60th
230th
23rd
8th
12th
CSS Colors
12th
Cubes
8th
17th
Day of Week
161st
Diamonds
14th
49th
7th
97th
10th
Divisors
33rd
464th55th
1st
1st
13th
14th
Emirp Numbers
20th
34th
13th39th
650th
6th
Emirp Numbers (Long)
349th
Emojify
9th
89th
Evil Numbers
30th
46th
32nd
645th
16th
11th
Evil Numbers (Long)
24th
19th
407th
Factorial Factorisation
19th
Farey Sequence
8th
20th
22nd
244th
Fibonacci
527th
62nd
7th
134th
33rd
1st
123rd
84th
70th46th
Fizz Buzz
89th45th
769th
46th
1st152nd
9th
372nd
84th
18th371st
50th21st64th46th
Foo Fizz Buzz Bar
917th
Gijswijt’s Sequence
7th
12th
Happy Numbers
8th
6th
Happy Numbers (Long)
409th
Inventory Sequence
266th
Kolakoski Constant
9th
45th
12th
15th
15th16th
163rd
15th
8th
9th4th
Kolakoski Sequence
41st
9th
Leap Years
12th
399th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
34th
Look and Say
26th
14th
12th
9th
Lucky Numbers
283rd
Medal Tally
77th
Morse Decoder
15th
162nd
Morse Encoder
15th
Niven Numbers
14th
25th
47th
76th
16th
Niven Numbers (Long)
12th
504th
Number Spiral
216th
Odious Numbers
1st
31st
331st
10th
Odious Numbers (Long)
1st
16th
246th
Pangram Grep
3rd
Pascal’s Triangle
39th
37th
9th
Pernicious Numbers
1st
668th
11th
Pernicious Numbers (Long)
1st
297th
6th
Polyominoes
105th
Prime Numbers
1st
341st
25th
508th
133rd
23rd11th
Prime Numbers (Long)
1st
263rd
73rd
Quine
145th
1st
92nd
Recamán
11th
10th
Reverse Polish Notation
261st
Rijndael S-box
22nd
ROT13
165th
Seven Segment
7th
Sierpiński Triangle
11th15th16th14th19th
74th42nd44th15th12th11th
20th21st21st12th19th11th
32nd15th33rd
18th17th41st125th23rd18th28th18th17th12th24th28th28th9th358th14th34th56th36th8th
12th17th10th
11th8th17th
Smith Numbers
10th
9th
Sudoku
152nd
Tongue-twisters
13th
21st
230th
11th
Tower of Hanoi
7th
Trinomial Triangle
14th
United States
15th
362nd
Vampire Numbers
4th
Van Eck Sequence
51st
17th
12th
γ
18th
9th
5th
λ
13th
71st51st
9th
30th11th
26th
16th
17th10th
22nd
12th
13th22nd
161st
18th38th19th
13th8th
10th6th
π
134th
202nd83rd
46th
426th
6th
τ
13th
9th
6th
φ
17th42nd
46th16th
80th
42nd22nd
375th
6th
√2
43rd
6th
𝑒
29th15th24th11th89th74th
15th
51st33rd16th35th13th29th
17th
41st
25th
10th58th121st80th
39th12th22nd8th44th26th50th14th430th102nd16th71st27th
26th9th12th12th7th11th7th14th