12 Days of Christmas
6th
229th
24 Game
4th
99 Bottles of Beer
143rd
6th
542nd
10th12th
Abundant Numbers
312th
13th
178th
12th
Abundant Numbers (Long)
161st
9th
129th
Arabic to Roman
8th
Arithmetic Numbers
91st
18th
18th
75th
Ascending Primes
9th6th
ASCII Table
394th
7th
brainfuck
103rd
368th
Card Number Validation
150th
Catalan Numbers
25th
234th
9th5th
Catalan’s Constant
15th
7th
22nd
11th
9th
6th
7th
6th
4th9th
Christmas Trees
19th
10th
30th
2nd
838th
34th9th
Collatz
24th19th
37th
30th
26th59th
254th
23rd
7th
11th
CSS Colors
11th
Cubes
15th
Day of Week
165th
Diamonds
12th
47th
6th
94th
9th
Divisors
30th
452nd54th
4th
122nd
12th
13th
Emirp Numbers
20th
34th
13th39th
645th
6th
Emirp Numbers (Long)
335th
Emojify
6th
75th
Evil Numbers
28th
45th
31st
627th
15th
11th
Evil Numbers (Long)
22nd
18th
382nd
Factorial Factorisation
18th
Farey Sequence
19th
20th
226th
Fibonacci
514th
59th
7th
127th
32nd
1st
126th
82nd
68th46th
Fizz Buzz
88th
755th
46th
1st152nd
9th
368th
219th
43rd369th
49th21st64th47th
Foo Fizz Buzz Bar
883rd
Gijswijt’s Sequence
12th
Happy Numbers
9th
7th
Happy Numbers (Long)
386th
Inventory Sequence
247th
Kolakoski Constant
8th
42nd
12th
15th
14th17th
151st
16th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
11th
388th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
11th
9th
Lucky Numbers
261st
Medal Tally
79th
Morse Decoder
14th
166th
Morse Encoder
14th
Niven Numbers
14th
25th
47th
70th
16th
Niven Numbers (Long)
11th
479th
Number Spiral
202nd
Odious Numbers
1st
30th
315th
10th
Odious Numbers (Long)
1st
16th
231st
Pangram Grep
3rd
Pascal’s Triangle
36th
35th
9th
Pernicious Numbers
1st
653rd
10th
Pernicious Numbers (Long)
1st
285th
7th
Polyominoes
92nd
Prime Numbers
1st
332nd
24th
516th
126th
23rd11th
Prime Numbers (Long)
1st
269th
71st
Quine
138th
1st
81st
Recamán
9th
9th
Reverse Polish Notation
253rd
Rijndael S-box
20th
ROT13
159th
Seven Segment
6th
Sierpiński Triangle
11th16th14th18th
73rd40th43rd15th12th10th
19th21st20th11th19th11th
28th14th32nd16th16th37th119th22nd16th27th18th17th11th23rd28th28th9th341st15th33rd52nd35th8th
12th16th10th
11th7th15th
Smith Numbers
9th
Sudoku
130th
Tongue-twisters
19th
249th
8th
Tower of Hanoi
6th
Trinomial Triangle
14th
United States
12th
347th
Vampire Numbers
4th
Van Eck Sequence
50th
16th
10th
γ
18th
5th
λ
12th
70th52nd
9th
27th12th
27th
16th
16th
21st
12th
12th21st
157th
16th35th19th
12th8th
10th6th
π
133rd
199th78th
43rd
410th
6th
τ
9th
6th
φ
15th42nd
37th15th
75th
39th22nd
366th
6th
√2
39th
6th
𝑒
29th15th23rd10th87th73rd
15th
50th32nd16th35th14th27th
16th
37th
9th54th113th77th
38th12th21st10th41st26th48th13th415th97th15th68th26th
27th8th12th11th6th11th7th12th