12 Days of Christmas
6th
221st
24 Game
4th
99 Bottles of Beer
141st
6th
527th
9th11th
Abundant Numbers
307th
13th
170th
12th
Abundant Numbers (Long)
156th
9th
122nd
Arabic to Roman
8th
Arithmetic Numbers
86th
17th
17th
71st
Ascending Primes
9th5th
ASCII Table
381st
6th
brainfuck
101st
359th
Card Number Validation
139th
Catalan Numbers
25th
223rd
9th5th
Catalan’s Constant
15th
7th
21st
11th
8th
6th
7th
6th
4th9th
Christmas Trees
16th
10th
28th
2nd
813th
27th8th
Collatz
22nd18th
35th
29th
25th58th
243rd
23rd
6th
11th
CSS Colors
10th
Cubes
15th
Day of Week
157th
Diamonds
11th
45th
6th
90th
9th
Divisors
28th
449th53rd
4th
118th
12th
13th
Emirp Numbers
20th
33rd
13th39th
633rd
6th
Emirp Numbers (Long)
323rd
Emojify
6th
72nd
Evil Numbers
27th
44th
29th
609th
14th
11th
Evil Numbers (Long)
21st
17th
369th
Factorial Factorisation
16th
Farey Sequence
19th
19th
215th
Fibonacci
507th
56th
7th
124th
32nd
1st
122nd
79th
67th45th
Fizz Buzz
86th
749th
44th
1st151st
9th
367th
210th
43rd364th
49th21st64th46th
Foo Fizz Buzz Bar
862nd
Gijswijt’s Sequence
11th
Happy Numbers
9th
7th
Happy Numbers (Long)
378th
Inventory Sequence
239th
Kolakoski Constant
8th
42nd
12th
15th
14th17th
146th
12th
7th
8th4th
Kolakoski Sequence
38th
9th
Leap Years
10th
377th
16th
Leyland Numbers
24th
9th
9th7th
ln 2
31st
Look and Say
25th
14th
11th
9th
Lucky Numbers
250th
Medal Tally
73rd
Morse Decoder
14th
160th
Morse Encoder
13th
Niven Numbers
14th
25th
47th
67th
15th
Niven Numbers (Long)
11th
471st
Number Spiral
194th
Odious Numbers
1st
28th
303rd
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
276th
6th
Polyominoes
83rd
Prime Numbers
1st
326th
24th
502nd
122nd
22nd11th
Prime Numbers (Long)
1st
257th
68th
Quine
137th
1st
72nd
Recamán
9th
9th
Reverse Polish Notation
246th
Rijndael S-box
19th
ROT13
153rd
Seven Segment
6th
Sierpiński Triangle
11th15th13th17th
73rd40th41st15th11th10th
19th21st19th11th18th11th
28th12th32nd16th15th36th118th22nd15th27th18th17th11th23rd28th28th9th331st14th33rd50th34th8th
12th16th10th
11th7th15th
Smith Numbers
9th
Sudoku
128th
Tongue-twisters
18th
243rd
7th
Tower of Hanoi
4th
Trinomial Triangle
13th
United States
12th
341st
Vampire Numbers
5th
Van Eck Sequence
48th
16th
9th
γ
17th
5th
λ
12th
70th50th
9th
27th12th
26th
15th
16th
20th
12th
12th21st
152nd
16th34th18th
12th8th
10th6th
π
129th
196th76th
42nd
399th
6th
τ
9th
6th
φ
15th41st
37th15th
73rd
39th22nd
354th
5th
√2
38th
6th
𝑒
29th13th22nd9th84th70th
15th
50th32nd15th34th13th26th
16th
37th
9th51st113th74th
37th12th21st10th41st26th46th13th403rd93rd15th67th25th
27th8th12th11th6th11th7th12th