12 Days of Christmas
22nd
Abundant Numbers
31st
Christmas Trees
22nd
Divisors
27th
Emirp Numbers
11th
Evil Numbers
32nd
Fibonacci
69th
Fizz Buzz
2,235th128th
Happy Numbers
27th
Leap Years
41st
Morse Decoder
6th
Morse Encoder
7th
Niven Numbers
32nd
Odious Numbers
32nd
Ordinal Numbers
Pangram Grep
27th
Pascalβs Triangle
18th
Pernicious Numbers
32nd
Prime Numbers
17th
Seven Segment
8th
Spelling Numbers
7th