12 Days of Christmas
24th
Abundant Numbers
32nd
Christmas Trees
26th
Divisors
28th
Emirp Numbers
13th
Evil Numbers
36th
Fibonacci
76th
Fizz Buzz
2,363rd131st
Happy Numbers
32nd
Leap Years
42nd
Morse Decoder
8th
Morse Encoder
9th
Niven Numbers
40th
Odious Numbers
36th
Ordinal Numbers
16th
Pangram Grep
31st
Pascal’s Triangle
19th
Pernicious Numbers
35th
Prime Numbers
21st
Seven Segment
10th
Spelling Numbers
7th