12 Days of Christmas
4th
129th
24 Game
4th
99 Bottles of Beer
143rd
1st
509th
9th11th
Abundant Numbers
307th
12th
102nd
12th
Abundant Numbers (Long)
157th
9th
83rd
Arabic to Roman
3rd
Arithmetic Numbers
86th
17th
17th
24th
Ascending Primes
9th5th
ASCII Table
382nd
6th
brainfuck
101st
362nd
Card Number Validation
136th
Catalan Numbers
25th
219th
9th5th
Catalan’s Constant
10th15th
7th
21st
11th
8th
6th
7th
6th
4th9th
Christmas Trees
17th
10th
28th
2nd
822nd
32nd8th
Collatz
19th
22nd19th
35th
29th
25th58th
204th
23rd
6th
11th
CSS Colors
10th
Cubes
15th
Day of Week
143rd
Diamonds
11th
46th
6th
90th
9th
Divisors
28th
449th54th
1st
1st
12th
13th
Emirp Numbers
20th
33rd
13th38th
629th
6th
Emirp Numbers (Long)
328th
Emojify
7th
77th
Evil Numbers
27th
44th
29th
611th
15th
11th
Evil Numbers (Long)
21st
17th
371st
Factorial Factorisation
16th
Farey Sequence
7th
19th
20th
216th
Fibonacci
510th
57th
7th
124th
32nd
1st
119th
80th
67th46th
Fizz Buzz
86th40th
751st
44th
1st151st
9th
366th
58th
18th366th
49th21st64th46th
Foo Fizz Buzz Bar
868th
Gijswijt’s Sequence
7th
11th
Happy Numbers
8th
6th
Happy Numbers (Long)
380th
Inventory Sequence
239th
Kolakoski Constant
8th
42nd
12th
15th
14th16th
143rd
12th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
10th
375th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
10th
9th
Lucky Numbers
251st
Medal Tally
66th
Morse Decoder
14th
144th
Morse Encoder
13th
Niven Numbers
12th
25th
46th
67th
15th
Niven Numbers (Long)
11th
475th
Number Spiral
192nd
Odious Numbers
1st
28th
305th
10th
Odious Numbers (Long)
1st
15th
224th
Pangram Grep
3rd
Pascal’s Triangle
36th
35th
9th
Pernicious Numbers
1st
642nd
10th
Pernicious Numbers (Long)
1st
277th
6th
Polyominoes
84th
Prime Numbers
1st
326th
24th
485th
122nd
23rd11th
Prime Numbers (Long)
1st
244th
68th
Quine
137th
1st
74th
Recamán
9th
9th
Reverse Polish Notation
241st
Rijndael S-box
20th
ROT13
155th
Seven Segment
5th
Sierpiński Triangle
11th15th15th13th17th
73rd41st41st15th12th10th
19th21st19th11th18th11th
28th12th32nd16th15th38th119th22nd15th27th18th17th11th23rd28th27th9th335th14th33rd50th34th8th
12th16th10th
11th7th15th
Smith Numbers
10th
9th
Sudoku
135th
Tongue-twisters
18th
219th
8th
Tower of Hanoi
4th
Trinomial Triangle
13th
United States
12th
342nd
Vampire Numbers
4th
Van Eck Sequence
48th
16th
9th
γ
17th
5th
λ
12th
70th50th
9th
27th12th
27th
14th
16th
20th
12th
12th20th
143rd
16th32nd17th
12th8th
10th6th
π
130th
191st77th
42nd
398th
6th
τ
12th
9th
6th
φ
15th41st
37th15th
74th
39th22nd
354th
5th
√2
38th
6th
𝑒
29th14th22nd9th83rd71st
15th
49th32nd16th34th10th26th
16th
37th
9th52nd113th75th
38th12th21st7th41st25th45th13th401st94th15th66th25th
26th8th12th10th6th11th7th12th