Abundant Numbers
769th
Abundant Numbers (Long)
333rd
Arithmetic Numbers
408th
Catalan Numbers
660th
Collatz
315th
Divisors
3,888th1,813th
Evil Numbers
1,433rd
185th
Evil Numbers (Long)
1,416th
Fibonacci
2,469th
Fizz Buzz
2,234th671st
Foo Fizz Buzz Bar
794th
Happy Numbers
1,144th
Happy Numbers (Long)
823rd
Leap Years
1,216th
Leyland Numbers
835th
Niven Numbers
2,004th
Niven Numbers (Long)
949th
Odious Numbers
2,125th1,035th1,504th
Odious Numbers (Long)
1,283rd
Pascal’s Triangle
1,291st1,461st
Pernicious Numbers
1,614th
Prime Numbers
1,714th
Prime Numbers (Long)
1,180th
Recamán
617th
Smith Numbers
618th
Sudoku
293rd
Van Eck Sequence
674th