12 Days of Christmas
8th
99 Bottles of Beer
13th
10th
Arabic to Roman
10th
10th
Christmas Trees
17th29th
10th
Divisors
33rd40th
24th
Emirp Numbers
10th20th
15th
Evil Numbers
49th30th
25th
Fibonacci
791st
39th44th
108th
Fizz Buzz
9th
564th18th
Happy Numbers
35th23rd
21st
Morse Decoder
13th
Morse Encoder
11th
10th
Niven Numbers
15th
Odious Numbers
42nd31st
20th
Pangram Grep
16th
20th
Pascal’s Triangle
42nd
Pernicious Numbers
46th
Prime Numbers
138th89th24th36th612th30th
Quine
1st
84th6th
72nd
Roman to Arabic
121st
27th
Seven Segment
12th
11th
Sierpiński Triangle
18th
28th
Spelling Numbers
12th
π
53rd14th499th26th
τ
44th11th
18th
φ
39th13th
20th
𝑒
35th16th
29th