Abundant Numbers
Abundant Numbers (Long)
Arithmetic Numbers
Catalan Numbers
679th
Collatz
Divisors
3,928th1,835th
Evil Numbers
1,480th
188th
Evil Numbers (Long)
Fibonacci
2,542nd
Fizz Buzz
2,269th683rd
Foo Fizz Buzz Bar
804th
Happy Numbers
Happy Numbers (Long)
Leap Years
1,232nd
Leyland Numbers
841st
Niven Numbers
2,026th
Niven Numbers (Long)
983rd
Odious Numbers
1,057th1,533rd
Odious Numbers (Long)
Pascal’s Triangle
1,479th
Pernicious Numbers
Prime Numbers
1,746th
Prime Numbers (Long)
1,202nd
Recamán
627th
Smith Numbers
Sudoku
297th
Van Eck Sequence