12 Days of Christmas
4th
121st
24 Game
4th
99 Bottles of Beer
137th
1st
485th
8th11th
Abundant Numbers
12th
91st
12th
Abundant Numbers (Long)
9th
71st
Arabic to Roman
3rd
Arithmetic Numbers
76th
16th
17th
23rd
Ascending Primes
8th6th
ASCII Table
352nd
6th
Card Number Validation
123rd
Catalan Numbers
20th
197th
8th4th
Catalan’s Constant
10th15th
5th
6th
21st
11th
7th
6th
6th
5th
4th9th
Christmas Trees
16th
26th
2nd
780th
8th
Collatz
16th
19th17th
33rd
26th
23rd54th
188th
19th
6th
8th
CSS Colors
10th
Cubes
14th
Day of Week
118th
Diamonds
11th
6th
8th
Divisors
26th
53rd
1st
1st
12th
13th
Emirp Numbers
19th
30th
13th38th
608th
6th
Emirp Numbers (Long)
300th
Emojify
6th
69th
Evil Numbers
25th
43rd
28th
11th
Evil Numbers (Long)
19th
16th
Farey Sequence
6th
18th
18th
200th
Fibonacci
469th
55th
6th
116th
32nd
1st
100th
59th
61st39th
Fizz Buzz
84th38th
712th
41st
1st146th
9th
361st
54th
18th350th
48th17th63rd42nd
Foo Fizz Buzz Bar
830th
Gijswijt’s Sequence
7th
10th
Happy Numbers
8th
5th
Kolakoski Constant
8th
40th
11th
12th
12th16th
131st
11th
6th
7th4th
Kolakoski Sequence
36th
8th
Leap Years
9th
355th
15th
Leyland Numbers
22nd
9th
9th7th
ln 2
28th
Look and Say
25th
14th
9th
8th
Lucky Numbers
235th
Medal Tally
59th
Morse Decoder
13th
135th
Morse Encoder
12th
Niven Numbers
10th
24th
45th
64th
12th
Niven Numbers (Long)
11th
Number Spiral
176th
Odious Numbers
1st
26th
275th
10th
Odious Numbers (Long)
1st
14th
201st
Pangram Grep
3rd
Pascal’s Triangle
31st
32nd
9th
Pernicious Numbers
1st
618th
9th
Pernicious Numbers (Long)
1st
258th
6th
Prime Numbers
1st
24th
457th
117th
20th11th
Prime Numbers (Long)
1st
221st
63rd
Quine
131st
1st
63rd
Recamán
9th
8th
Seven Segment
5th
Sierpiński Triangle
10th14th15th13th17th10th68th37th40th15th11th10th
19th21st19th10th18th10th
26th11th32nd16th15th36th112th21st15th26th15th16th10th23rd26th27th9th323rd13th32nd47th33rd8th
11th15th9th
10th7th15th11th
Smith Numbers
10th
9th
Tongue-twisters
16th
197th
7th
United States
11th
328th
Vampire Numbers
4th
Van Eck Sequence
46th
16th
8th
γ
5th
λ
11th
67th46th
9th
26th11th
25th
13th
15th
17th
11th
10th19th
137th
14th29th15th
11th7th
8th6th
π
120th
37th
6th
τ
12th
8th
6th
φ
15th39th
36th15th
70th
36th22nd
331st
6th
√2
34th
6th
𝑒
28th13th22nd9th79th66th
13th
32nd14th34th
26th
36th
8th45th106th73rd
39th11th20th6th37th24th44th13th374th83rd15th64th22nd
24th7th11th9th6th11th7th12th32nd