12 Days of Christmas
27th
Abundant Numbers
34th
Christmas Trees
26th
Divisors
33rd
Emirp Numbers
14th
Evil Numbers
36th
Fibonacci
83rd
Fizz Buzz
2,469th134th
Happy Numbers
33rd
Leap Years
45th
Morse Decoder
9th
Morse Encoder
10th
Niven Numbers
44th
Odious Numbers
37th
Ordinal Numbers
16th
Pangram Grep
34th
Pascal’s Triangle
21st
Pernicious Numbers
42nd
Prime Numbers
25th
Seven Segment
12th
Spelling Numbers
8th