12 Days of Christmas
630th
Christmas Trees
319th
Divisors
1st
Emirp Numbers
50th
Emirp Numbers (Long)
225th
Evil Numbers
1st
Evil Numbers (Long)
38th
Fibonacci
184th
Fizz Buzz
58th20th
Foo Fizz Buzz Bar
1st
Leap Years
368th
Niven Numbers
142nd
Pascal’s Triangle
212th
Prime Numbers
749th
Quine
72nd
Smith Numbers
160th
π
140th
τ
117th
√2
221st