12 Days of Christmas
10th
246th
24 Game
7th
4th
99 Bottles of Beer
145th
9th
567th
10th12th
Abundant Numbers
321st
13th
187th
12th
Abundant Numbers (Long)
170th
9th
136th
Arabic to Roman
8th
Arithmetic Numbers
95th
18th
20th
81st
Ascending Primes
9th6th
ASCII Table
414th
6th
brainfuck
106th
384th
Card Number Validation
159th
Catalan Numbers
28th
251st
9th5th
Catalan’s Constant
16th
9th
23rd
11th
11th
11th
6th
7th
6th
4th11th
Christmas Trees
18th
11th
29th
2nd
851st
32nd9th
Collatz
24th21st
44th
30th
32nd60th
271st
23rd
8th
12th
CSS Colors
13th
Cubes
8th
18th
Day of Week
179th
Diamonds
14th
49th
7th
98th
10th
Divisors
33rd
464th55th
4th
126th
13th
14th
Emirp Numbers
20th
34th
13th40th
657th
6th
Emirp Numbers (Long)
347th
Emojify
8th
84th
Evil Numbers
30th
46th
32nd
646th
16th
11th
Evil Numbers (Long)
24th
19th
407th
Factorial Factorisation
19th
Farey Sequence
20th
22nd
245th
Fibonacci
527th
61st
7th
134th
33rd
1st
128th
84th
70th46th
Fizz Buzz
89th
768th
46th
1st152nd
9th
373rd
237th
45th371st
50th21st64th46th
Foo Fizz Buzz Bar
915th
Gijswijt’s Sequence
12th
Happy Numbers
9th
7th
Happy Numbers (Long)
405th
Inventory Sequence
265th
Kolakoski Constant
9th
45th
12th
15th
16th17th
168th
15th
8th
9th4th
Kolakoski Sequence
41st
9th
Leap Years
12th
406th
16th
Leyland Numbers
25th
9th
9th7th
ln 2
35th
Look and Say
26th
14th
13th
9th
Lucky Numbers
283rd
Medal Tally
86th
Morse Decoder
16th
176th
Morse Encoder
15th
Niven Numbers
16th
25th
48th
74th
16th
Niven Numbers (Long)
12th
503rd
Number Spiral
221st
Odious Numbers
1st
31st
332nd
10th
Odious Numbers (Long)
1st
16th
246th
Pangram Grep
3rd
Pascal’s Triangle
39th
37th
9th
Pernicious Numbers
1st
665th
11th
Pernicious Numbers (Long)
1st
295th
6th
Polyominoes
105th
Prime Numbers
1st
340th
25th
529th
132nd
23rd11th
Prime Numbers (Long)
1st
282nd
72nd
Quine
145th
1st
90th
Recamán
11th
10th
Reverse Polish Notation
265th
Rijndael S-box
22nd
ROT13
164th
Seven Segment
8th
Sierpiński Triangle
11th15th14th19th
74th41st43rd15th12th11th
20th21st21st12th18th11th
32nd15th33rd
18th16th39th124th23rd18th28th18th17th12th24th28th29th9th354th14th34th56th36th8th
12th17th10th
11th8th17th
Smith Numbers
9th
Sudoku
145th
Tongue-twisters
12th
22nd
257th
11th
Tower of Hanoi
7th
Trinomial Triangle
14th
United States
15th
363rd
Vampire Numbers
4th
Van Eck Sequence
51st
17th
12th
γ
18th
9th
5th
λ
13th
71st51st
9th
29th11th
26th
16th
17th8th
22nd
12th
14th22nd
169th
19th40th20th
13th8th
10th6th
π
135th
206th83rd
47th
429th
6th
τ
9th
6th
φ
16th42nd
46th16th
80th
43rd22nd
377th
6th
√2
44th
6th
𝑒
29th15th24th11th90th74th
15th
52nd33rd16th35th16th28th
17th
41st
24th
10th58th120th80th
39th12th22nd11th45th27th51st14th435th102nd16th72nd27th
27th9th12th13th7th11th7th14th