12 Days of Christmas
613th
Christmas Trees
308th
Divisors
1st
Emirp Numbers
50th
Emirp Numbers (Long)
216th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
173rd
Fizz Buzz
54th20th
Foo Fizz Buzz Bar
1st
Leap Years
357th
Niven Numbers
133rd
Pascal’s Triangle
202nd
Prime Numbers
734th
Quine
67th
Smith Numbers
150th
π
134th
τ
113th
√2
211th