12 Days of Christmas
47th
99 Bottles of Beer
50th
Arabic to Roman
25th
Christmas Trees
62nd
Diamonds
42nd
Divisors
44th
Emirp Numbers
36th
Evil Numbers
69th
Fibonacci
121st
Fizz Buzz
81st
Happy Numbers
64th
Leap Years
30th
Niven Numbers
43rd
Odious Numbers
64th
Pangram Grep
39th
Pascal’s Triangle
3rd
Pernicious Numbers
97th
Prime Numbers
89th
Seven Segment
26th