12 Days of Christmas
87th
91st
49th
63rd
99 Bottles of Beer
35th
Abundant Numbers
11th
38th
30th
19th
12th
13th
17th
43rd
8th
83rd
11th
48th
8th
20th
16th
Abundant Numbers (Long)
10th
25th
18th
18th
9th
9th
10th
24th
3rd
47th
10th
28th
6th
15th
10th
Arabic to Roman
66th
Arithmetic Numbers
5th
ASCII Table
24th
Catalan Numbers
15th
14th
Catalan’s Constant
1st
5th
6th
Christmas Trees
64th
26th
Collatz
6th
45th
3rd
23rd
10th
14th
11th
22nd
3rd
59th
14th
13th
30th
49th
39th
11th
7th
18th
12th
CSS Colors
13th
Cubes
12th
Day of Week
1st
1st
Diamonds
29th
54th
Divisors
14th
84th
64th
30th
13th
18th
17th
53rd
55th
74th
20th
34th
79th
1st
140th
1st
33rd
3rd
19th
17th
Emirp Numbers
17th
Emirp Numbers (Long)
23rd
Emojify
11th
Evil Numbers
15th
17th
7th
10th
18th
1st
1st
18th
7th
35th
13th
21st
33rd
1st
162nd
48th
20th
20th
21st
4th
Evil Numbers (Long)
16th
21st
6th
11th
12th
1st
12th
24th
18th
97th
16th
16th
49th
27th
14th
11th
13th
3rd
Fibonacci
9th
17th
9th
4th
31st
2nd
34th
1st
1st
31st
1st
23rd
1st
66th
105th
21st
47th
88th
1st
51st
104th
29th
1st
17th
10th
Fizz Buzz
1st
18th
1st
30th
232nd
15th
43rd
20th
39th
50th
159th
48th
264th
1st
99th
9th
72nd
18th
44th
179th
46th
283rd
85th
103rd
32nd
43rd
34th
Foo Fizz Buzz Bar
32nd
1st
Fractions
24th
Happy Numbers
27th
5th
40th
1st
Happy Numbers (Long)
22nd
Inventory Sequence
24th
ISBN
10th
22nd
10th
Kolakoski Constant
5th
Kolakoski Sequence
1st
11th
Leap Years
14th
39th
9th
79th
52nd
32nd
9th
14th
18th
18th
21st
23rd
41st
62nd
37th
128th
43rd
22nd
67th
32nd
27th
40th
34th
88th
224th
20th
35th
93rd
71st
22nd
30th
13th
18th
12th
23rd
21st
Levenshtein Distance
37th
Leyland Numbers
13th
4th
Lucky Numbers
13th
29th
Niven Numbers
1st
1st
18th
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
1st
Niven Numbers (Long)
32nd
Odious Numbers
16th
16th
7th
7th
9th
1st
1st
20th
6th
30th
11th
21st
39th
1st
114th
42nd
19th
20th
21st
4th
Odious Numbers (Long)
18th
14th
6th
6th
6th
1st
11th
21st
16th
10th
16th
19th
1st
41st
19th
13th
11th
13th
3rd
Ordinal Numbers
23rd
Pangram Grep
23rd
44th
13th
16th
14th
17th
22nd
27th
115th
18th
13th
41st
42nd
75th
8th
12th
Pascal’s Triangle
19th
24th
Pernicious Numbers
1st
1st
1st
1st
1st
1st
1st
1st
7th
1st
1st
4th
1st
1st
9th
8th
1st
1st
1st
1st
1st
1st
22nd
1st
10th
1st
17th
1st
1st
12th
1st
1st
1st
Pernicious Numbers (Long)
20th
38th
Prime Numbers
15th
11th
109th
61st
23rd
13th
17th
1st
24th
1st
1st
1st
1st
18th
169th
1st
45th
75th
6th
1st
1st
69th
36th
1st
20th
22nd
Prime Numbers (Long)
14th
65th
39th
20th
12th
14th
11th
1st
24th
1st
7th
80th
17th
21st
62nd
40th
18th
4th
18th
1st
Quine
19th
1st
5th
5th
51st
84th
4th
1st
Recamán
25th
Roman to Arabic
12th
Seven Segment
17th
Spelling Numbers
80th
Time Distance
13th
Tongue-twisters
34th
15th
United States
13th
Van Eck Sequence
24th
γ
1st
λ
7th
10th
π
1st
6th
58th
9th
τ
6th
43rd
9th
φ
1st
6th
46th
9th
√2
6th
45th
10th
𝑒
1st
6th
18th
49th
8th