12 Days of Christmas
4th
122nd
24 Game
4th
99 Bottles of Beer
141st
1st
499th
8th11th
Abundant Numbers
12th
96th
12th
Abundant Numbers (Long)
9th
74th
Arabic to Roman
3rd
Arithmetic Numbers
79th
17th
17th
23rd
Ascending Primes
8th6th
ASCII Table
365th
6th
Card Number Validation
130th
Catalan Numbers
23rd
207th
8th4th
Catalan’s Constant
10th15th
5th
7th
21st
11th
7th
6th
6th
5th
4th9th
Christmas Trees
16th
26th
2nd
796th
8th
Collatz
18th
21st17th
34th
28th
24th56th
195th
22nd
6th
9th
CSS Colors
10th
Cubes
14th
Day of Week
129th
Diamonds
11th
6th
8th
Divisors
27th
52nd
1st
1st
12th
12th
Emirp Numbers
20th
32nd
13th38th
620th
6th
Emirp Numbers (Long)
311th
Emojify
7th
74th
Evil Numbers
26th
44th
29th
11th
Evil Numbers (Long)
20th
17th
Farey Sequence
6th
19th
18th
205th
Fibonacci
480th
55th
7th
118th
32nd
1st
102nd
62nd
63rd41st
Fizz Buzz
84th40th
725th
43rd
1st147th
9th
363rd
54th
18th353rd
49th19th63rd44th
Foo Fizz Buzz Bar
851st
Gijswijt’s Sequence
7th
10th
Happy Numbers
8th
5th
Kolakoski Constant
8th
41st
11th
14th
13th16th
137th
12th
6th
7th4th
Kolakoski Sequence
37th
8th
Leap Years
9th
363rd
15th
Leyland Numbers
23rd
9th
9th7th
ln 2
29th
Look and Say
25th
14th
9th
8th
Lucky Numbers
244th
Medal Tally
59th
Morse Decoder
14th
141st
Morse Encoder
13th
Niven Numbers
11th
24th
46th
66th
13th
Niven Numbers (Long)
11th
Number Spiral
183rd
Odious Numbers
1st
28th
292nd
10th
Odious Numbers (Long)
1st
15th
214th
Pangram Grep
3rd
Pascal’s Triangle
34th
34th
9th
Pernicious Numbers
1st
627th
9th
Pernicious Numbers (Long)
1st
266th
6th
Prime Numbers
1st
24th
470th
121st
22nd11th
Prime Numbers (Long)
1st
229th
67th
Quine
133rd
1st
70th
Recamán
9th
8th
Seven Segment
5th
Sierpiński Triangle
10th14th15th13th17th10th71st39th41st15th11th10th
19th21st19th10th18th10th
27th11th32nd16th15th37th117th21st15th26th15th17th10th23rd26th27th9th329th13th32nd47th33rd8th
11th15th9th
10th7th15th
Smith Numbers
10th
9th
Tongue-twisters
16th
208th
7th
Trinomial Triangle
12th
United States
12th
335th
Vampire Numbers
4th
Van Eck Sequence
49th
16th
8th
γ
5th
λ
12th
68th47th
9th
26th11th
25th
14th
15th
18th
12th
11th20th
139th
14th29th17th
12th8th
9th6th
π
122nd
42nd
6th
τ
12th
8th
6th
φ
15th40th
37th13th
73rd
38th22nd
346th
6th
√2
37th
6th
𝑒
29th13th22nd9th82nd67th
14th
32nd14th34th
26th
36th
9th50th113th74th
40th11th21st6th40th24th44th13th389th87th15th64th23rd
25th8th11th9th6th11th7th12th