Abundant Numbers
799th
Abundant Numbers (Long)
390th
Arithmetic Numbers
437th
Catalan Numbers
753rd
Collatz
342nd
Divisors
4,018th1,909th
Evil Numbers
1,513th
207th
Evil Numbers (Long)
1,575th
Fibonacci
2,604th
Fizz Buzz
2,140th3,274th
Foo Fizz Buzz Bar
1,284th
Happy Numbers
1,211th
Happy Numbers (Long)
868th
Leap Years
1,240th
Leyland Numbers
900th
Niven Numbers
2,221st
Niven Numbers (Long)
1,054th
Odious Numbers
2,286th1,120th1,622nd
Odious Numbers (Long)
1,438th
Pascal’s Triangle
1,424th1,602nd
Pernicious Numbers
1,788th
Prime Numbers
1,803rd
Prime Numbers (Long)
1,286th
Recamán
658th
Smith Numbers
670th
Sudoku
312th
Van Eck Sequence
728th