12 Days of Christmas
7th
99 Bottles of Beer
6th
Abundant Numbers
5th
Arabic to Roman
5th
Christmas Trees
7th
Diamonds
8th
Divisors
8th
Emirp Numbers
7th
Evil Numbers
13th
Fibonacci
10th
Fizz Buzz
679th1st
Happy Numbers
1st
Leap Years
7th
Leyland Numbers
6th
Morse Decoder
6th
Morse Encoder
6th
Niven Numbers
1st
Odious Numbers
14th
Ordinal Numbers
11th
Pangram Grep
π
Pascalβs Triangle
1st
Pernicious Numbers
25th
Prime Numbers
17th
Quine
1st
71st96th
Roman to Arabic
Seven Segment
6th
SierpiΕski Triangle
4th
Spelling Numbers
6th
Ο
Ο
Ο
π
8th