12 Days of Christmas
6th
225th
24 Game
4th
99 Bottles of Beer
142nd
6th
538th
10th11th
Abundant Numbers
310th
13th
177th
12th
Abundant Numbers (Long)
161st
9th
127th
Arabic to Roman
8th
Arithmetic Numbers
88th
17th
17th
75th
Ascending Primes
9th6th
ASCII Table
391st
6th
brainfuck
101st
367th
Card Number Validation
147th
Catalan Numbers
25th
230th
9th5th
Catalan’s Constant
15th
7th
21st
11th
8th
6th
7th
6th
4th9th
Christmas Trees
17th
10th
29th
2nd
832nd
32nd8th
Collatz
23rd19th
37th
29th
25th59th
249th
23rd
7th
11th
CSS Colors
10th
Cubes
15th
Day of Week
163rd
Diamonds
11th
47th
6th
93rd
9th
Divisors
28th
451st54th
4th
121st
12th
13th
Emirp Numbers
20th
34th
13th39th
641st
6th
Emirp Numbers (Long)
332nd
Emojify
6th
74th
Evil Numbers
27th
45th
29th
621st
15th
11th
Evil Numbers (Long)
21st
17th
379th
Factorial Factorisation
18th
Farey Sequence
19th
20th
223rd
Fibonacci
513th
59th
7th
125th
32nd
1st
124th
81st
68th46th
Fizz Buzz
88th
754th
46th
1st152nd
9th
369th
216th
43rd368th
50th21st65th47th
Foo Fizz Buzz Bar
877th
Gijswijt’s Sequence
11th
Happy Numbers
9th
7th
Happy Numbers (Long)
382nd
Inventory Sequence
244th
Kolakoski Constant
8th
42nd
12th
15th
14th17th
150th
13th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
10th
387th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
11th
9th
Lucky Numbers
256th
Medal Tally
77th
Morse Decoder
14th
164th
Morse Encoder
13th
Niven Numbers
14th
25th
47th
68th
15th
Niven Numbers (Long)
11th
477th
Number Spiral
199th
Odious Numbers
1st
28th
311th
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
283rd
6th
Polyominoes
91st
Prime Numbers
1st
328th
24th
512th
126th
23rd11th
Prime Numbers (Long)
1st
266th
70th
Quine
138th
1st
76th
Recamán
9th
9th
Reverse Polish Notation
250th
Rijndael S-box
20th
ROT13
156th
Seven Segment
6th
Sierpiński Triangle
11th15th13th17th
73rd40th42nd15th12th10th
19th21st19th11th18th11th
28th13th32nd16th15th36th119th22nd15th27th18th17th11th23rd28th28th9th335th14th33rd50th35th8th
12th16th10th
11th7th15th
Smith Numbers
9th
Sudoku
130th
Tongue-twisters
19th
246th
8th
Tower of Hanoi
4th
Trinomial Triangle
13th
United States
12th
346th
Vampire Numbers
4th
Van Eck Sequence
48th
16th
10th
γ
17th
5th
λ
12th
70th50th
9th
27th12th
27th
15th
16th
21st
12th
12th21st
155th
16th35th19th
12th8th
10th6th
π
132nd
198th77th
43rd
409th
6th
τ
9th
6th
φ
15th41st
37th15th
74th
39th22nd
360th
5th
√2
39th
6th
𝑒
29th15th22nd9th85th72nd
15th
50th32nd16th34th13th26th
16th
37th
9th53rd113th76th
38th12th21st10th41st26th46th13th409th94th15th67th26th
27th8th12th11th6th11th7th12th