12 Days of Christmas
345th
Christmas Trees
285th
Divisors
85th
Emirp Numbers
64th
Evil Numbers
148th
120th
Fibonacci
271st1,712th
Fizz Buzz
1st
Happy Numbers
58th
Leap Years
242nd
Niven Numbers
1st
Odious Numbers
120th
Pangram Grep
95th
Pascal’s Triangle
100th
Pernicious Numbers
68th
Prime Numbers
120th
Seven Segment
67th