Abundant Numbers
1,285th
Abundant Numbers (Long)
347th
Arithmetic Numbers
316th
Catalan Numbers
731st
Collatz
110th
Divisors
3,881st1,618th
Evil Numbers
1,580th
214th
Evil Numbers (Long)
1,530th
Fibonacci
2,502nd
Fizz Buzz
1,460th1,900th
Foo Fizz Buzz Bar
773rd
Happy Numbers
1,466th
Happy Numbers (Long)
708th
Leap Years
1,170th
Leyland Numbers
798th
Niven Numbers
2,287th
Niven Numbers (Long)
979th
Odious Numbers
2,277th1,030th1,509th
Odious Numbers (Long)
1,385th
Pascal’s Triangle
1,309th1,527th
Pernicious Numbers
1,702nd
Prime Numbers
2,288th
Prime Numbers (Long)
1,231st
Recamán
549th
Smith Numbers
545th
Sudoku
226th
Van Eck Sequence
694th