12 Days of Christmas
43rd
99 Bottles of Beer
45th
Arabic to Roman
21st
Christmas Trees
54th
Diamonds
35th
Divisors
38th
Emirp Numbers
34th
Evil Numbers
61st
Fibonacci
107th
Fizz Buzz
69th
Happy Numbers
59th
Leap Years
28th
Niven Numbers
38th
Odious Numbers
56th
Pangram Grep
34th
Pascalβs Triangle
3rd
Pernicious Numbers
85th
Prime Numbers
76th
Seven Segment
25th