12 Days of Christmas
7th
99 Bottles of Beer
13th
9th
Arabic to Roman
10th
8th
Christmas Trees
17th29th
10th
Divisors
33rd40th
24th
Emirp Numbers
10th19th
15th
Evil Numbers
47th30th
24th
Fibonacci
774th
38th44th
106th
Fizz Buzz
9th
546th18th
Happy Numbers
33rd23rd
21st
Morse Decoder
13th
Morse Encoder
11th
10th
Niven Numbers
15th
Odious Numbers
40th31st
19th
Pangram Grep
15th
19th
Pascal’s Triangle
42nd
Pernicious Numbers
43rd
Prime Numbers
131st86th24th35th592nd30th
Quine
1st
81st5th
72nd
Roman to Arabic
121st
27th
Seven Segment
12th
11th
Sierpiński Triangle
18th
28th
Spelling Numbers
12th
π
51st13th481st26th
τ
40th10th
17th
φ
38th13th
20th
𝑒
35th16th
29th