12 Days of Christmas
599th
Christmas Trees
301st
Divisors
1st
Emirp Numbers
49th
Emirp Numbers (Long)
208th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
163rd
Fizz Buzz
54th20th
Foo Fizz Buzz Bar
1st
Leap Years
348th
Niven Numbers
127th
Pascal’s Triangle
201st
Prime Numbers
724th
Quine
63rd
Smith Numbers
148th
π
130th
τ
109th
√2
208th