Abundant Numbers
Abundant Numbers (Long)
Arithmetic Numbers
Catalan Numbers
673rd
Collatz
Divisors
3,827th1,575th
Evil Numbers
1,530th
195th
Evil Numbers (Long)
Fibonacci
2,469th
Fizz Buzz
1,575th535th
Foo Fizz Buzz Bar
427th
Happy Numbers
Happy Numbers (Long)
Leap Years
1,179th
Leyland Numbers
771st
Niven Numbers
2,107th
Niven Numbers (Long)
910th
Odious Numbers
981st1,452nd
Odious Numbers (Long)
Pascal’s Triangle
1,419th
Pernicious Numbers
Prime Numbers
2,267th
Prime Numbers (Long)
1,176th
Recamán
536th
Smith Numbers
Sudoku
219th
Van Eck Sequence