Abundant Numbers
842nd
Abundant Numbers (Long)
342nd
Arithmetic Numbers
443rd
Catalan Numbers
790th
Collatz
246th
Divisors
4,107th1,990th
Evil Numbers
1,569th
217th
Evil Numbers (Long)
1,651st
Fibonacci
2,695th
Fizz Buzz
2,195th3,348th
Foo Fizz Buzz Bar
1,322nd
Happy Numbers
1,284th
Happy Numbers (Long)
906th
Leap Years
1,292nd
Leyland Numbers
930th
Niven Numbers
2,292nd
Niven Numbers (Long)
1,094th
Odious Numbers
2,375th1,161st1,679th
Odious Numbers (Long)
1,506th
Pascal’s Triangle
1,460th1,638th
Pernicious Numbers
1,855th
Prime Numbers
1,855th
Prime Numbers (Long)
1,334th
Recamán
677th
Smith Numbers
694th
Sudoku
325th
Van Eck Sequence
759th