12 Days of Christmas
369th
Christmas Trees
295th
Divisors
88th
Emirp Numbers
66th
Evil Numbers
157th
130th
Fibonacci
295th1,812th
Fizz Buzz
1st
Happy Numbers
61st
Leap Years
271st
Niven Numbers
1st
Odious Numbers
128th
Pangram Grep
105th
Pascal’s Triangle
106th
Pernicious Numbers
73rd
Prime Numbers
130th
Seven Segment
74th