12 Days of Christmas
4th
122nd
24 Game
4th
99 Bottles of Beer
140th
1st
496th
8th11th
Abundant Numbers
12th
93rd
12th
Abundant Numbers (Long)
9th
73rd
Arabic to Roman
3rd
Arithmetic Numbers
78th
17th
17th
23rd
Ascending Primes
8th6th
ASCII Table
365th
6th
Card Number Validation
130th
Catalan Numbers
22nd
207th
8th4th
Catalan’s Constant
10th15th
5th
7th
21st
11th
7th
6th
6th
5th
4th9th
Christmas Trees
16th
26th
2nd
793rd
8th
Collatz
18th
21st17th
33rd
28th
24th56th
194th
22nd
6th
9th
CSS Colors
10th
Cubes
14th
Day of Week
122nd
Diamonds
11th
6th
8th
Divisors
27th
52nd
1st
1st
12th
12th
Emirp Numbers
20th
32nd
13th38th
617th
6th
Emirp Numbers (Long)
309th
Emojify
6th
72nd
Evil Numbers
26th
44th
29th
11th
Evil Numbers (Long)
20th
17th
Farey Sequence
6th
19th
18th
203rd
Fibonacci
478th
55th
7th
118th
32nd
1st
102nd
62nd
63rd41st
Fizz Buzz
84th40th
721st
43rd
1st147th
9th
363rd
54th
18th352nd
49th19th63rd43rd
Foo Fizz Buzz Bar
845th
Gijswijt’s Sequence
7th
10th
Happy Numbers
8th
5th
Kolakoski Constant
8th
40th
11th
14th
12th16th
135th
11th
6th
7th4th
Kolakoski Sequence
36th
8th
Leap Years
9th
360th
15th
Leyland Numbers
23rd
9th
9th7th
ln 2
29th
Look and Say
25th
14th
9th
8th
Lucky Numbers
244th
Medal Tally
59th
Morse Decoder
13th
139th
Morse Encoder
12th
Niven Numbers
11th
24th
46th
66th
13th
Niven Numbers (Long)
11th
Number Spiral
183rd
Odious Numbers
1st
27th
287th
10th
Odious Numbers (Long)
1st
15th
210th
Pangram Grep
3rd
Pascal’s Triangle
34th
34th
9th
Pernicious Numbers
1st
626th
9th
Pernicious Numbers (Long)
1st
266th
6th
Prime Numbers
1st
24th
469th
119th
22nd11th
Prime Numbers (Long)
1st
228th
64th
Quine
132nd
1st
67th
Recamán
9th
8th
Seven Segment
5th
Sierpiński Triangle
10th14th15th13th17th10th71st38th40th15th11th10th
19th21st19th10th18th10th
27th11th32nd16th15th37th116th21st15th26th15th16th10th23rd26th27th9th327th13th32nd47th33rd8th
11th15th9th
10th7th15th
Smith Numbers
10th
9th
Tongue-twisters
16th
206th
7th
Trinomial Triangle
10th
United States
11th
334th
Vampire Numbers
4th
Van Eck Sequence
48th
16th
8th
γ
5th
λ
11th
67th46th
9th
26th11th
25th
13th
15th
17th
11th
10th19th
138th
14th29th15th
11th7th
9th6th
π
121st
39th
6th
τ
12th
8th
6th
φ
15th39th
37th13th
72nd
37th22nd
343rd
6th
√2
36th
6th
𝑒
29th13th22nd9th80th67th
14th
32nd14th34th
26th
36th
9th50th112th73rd
39th11th21st6th39th24th44th13th385th86th15th64th22nd
25th7th11th9th6th11th7th12th