12 Days of Christmas
4th
128th
24 Game
4th
99 Bottles of Beer
143rd
1st
508th
9th11th
Abundant Numbers
306th
12th
100th
12th
Abundant Numbers (Long)
156th
9th
81st
Arabic to Roman
3rd
Arithmetic Numbers
86th
17th
17th
24th
Ascending Primes
9th5th
ASCII Table
379th
6th
brainfuck
101st
359th
Card Number Validation
134th
Catalan Numbers
25th
216th
9th5th
Catalan’s Constant
10th15th
7th
21st
11th
8th
6th
7th
6th
4th9th
Christmas Trees
16th
10th
28th
2nd
815th
30th8th
Collatz
19th
22nd18th
35th
29th
25th58th
201st
23rd
6th
11th
CSS Colors
10th
Cubes
15th
Day of Week
139th
Diamonds
11th
45th
6th
89th
9th
Divisors
28th
449th53rd
1st
1st
12th
13th
Emirp Numbers
20th
33rd
13th38th
626th
6th
Emirp Numbers (Long)
323rd
Emojify
7th
76th
Evil Numbers
27th
44th
29th
608th
14th
11th
Evil Numbers (Long)
21st
17th
368th
Factorial Factorisation
16th
Farey Sequence
6th
19th
19th
214th
Fibonacci
509th
56th
7th
124th
32nd
1st
117th
79th
67th45th
Fizz Buzz
86th40th
750th
44th
1st151st
9th
366th
58th
18th364th
49th21st64th46th
Foo Fizz Buzz Bar
862nd
Gijswijt’s Sequence
7th
11th
Happy Numbers
8th
6th
Happy Numbers (Long)
378th
Inventory Sequence
239th
Kolakoski Constant
8th
42nd
12th
15th
14th16th
142nd
12th
7th
9th4th
Kolakoski Sequence
39th
9th
Leap Years
10th
371st
16th
Leyland Numbers
24th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
10th
9th
Lucky Numbers
250th
Medal Tally
63rd
Morse Decoder
14th
144th
Morse Encoder
13th
Niven Numbers
12th
25th
46th
67th
15th
Niven Numbers (Long)
11th
471st
Number Spiral
190th
Odious Numbers
1st
28th
302nd
10th
Odious Numbers (Long)
1st
15th
223rd
Pangram Grep
3rd
Pascal’s Triangle
36th
35th
9th
Pernicious Numbers
1st
639th
10th
Pernicious Numbers (Long)
1st
275th
6th
Polyominoes
82nd
Prime Numbers
1st
326th
24th
482nd
122nd
22nd11th
Prime Numbers (Long)
1st
239th
68th
Quine
137th
1st
72nd
Recamán
9th
9th
Reverse Polish Notation
241st
Rijndael S-box
19th
ROT13
153rd
Seven Segment
5th
Sierpiński Triangle
11th15th15th13th17th
73rd41st41st15th11th10th
19th21st19th11th18th11th
28th12th32nd16th15th38th119th22nd15th27th18th17th11th23rd28th27th9th335th14th33rd50th34th8th
12th16th10th
11th7th15th
Smith Numbers
10th
9th
Sudoku
135th
Tongue-twisters
18th
217th
7th
Tower of Hanoi
4th
Trinomial Triangle
13th
United States
12th
340th
Vampire Numbers
5th
Van Eck Sequence
48th
16th
9th
γ
17th
5th
λ
12th
70th50th
9th
27th12th
27th
14th
16th
20th
12th
12th20th
142nd
16th32nd17th
12th8th
10th6th
π
128th
191st76th
42nd
395th
6th
τ
12th
9th
6th
φ
15th41st
37th15th
73rd
39th22nd
352nd
5th
√2
38th
6th
𝑒
29th13th22nd9th83rd71st
15th
49th32nd15th34th10th26th
16th
37th
9th51st113th74th
37th12th21st7th41st25th45th13th399th93rd15th66th25th
26th8th12th10th6th11th7th12th