Abundant Numbers
1,380th
Abundant Numbers (Long)
342nd
Arithmetic Numbers
323rd
Catalan Numbers
730th
Collatz
110th
Divisors
3,979th1,648th
Evil Numbers
1,622nd
209th
Evil Numbers (Long)
1,545th
Fibonacci
2,574th
Fizz Buzz
1,658th2,156th
Foo Fizz Buzz Bar
835th
Happy Numbers
1,475th
Happy Numbers (Long)
719th
Leap Years
1,237th
Leyland Numbers
810th
Niven Numbers
2,282nd
Niven Numbers (Long)
980th
Odious Numbers
2,316th1,042nd1,535th
Odious Numbers (Long)
1,396th
Pascal’s Triangle
1,307th1,517th
Pernicious Numbers
1,730th
Prime Numbers
2,374th
Prime Numbers (Long)
1,244th
Recamán
557th
Smith Numbers
546th
Sudoku
227th
Van Eck Sequence
702nd