12 Days of Christmas
649th
Christmas Trees
331st
Divisors
1st
Emirp Numbers
50th
Emirp Numbers (Long)
229th
Evil Numbers
1st
Evil Numbers (Long)
40th
Fibonacci
187th
Fizz Buzz
58th20th
Foo Fizz Buzz Bar
1st
Leap Years
372nd
Niven Numbers
148th
Pascal’s Triangle
214th
Prime Numbers
759th
Quine
72nd
Smith Numbers
161st
π
145th
τ
118th
√2
226th