Abundant Numbers
1,439th
Abundant Numbers (Long)
392nd
Arithmetic Numbers
364th
Catalan Numbers
829th
Collatz
96th
Divisors
4,101st1,776th
Evil Numbers
1,724th
241st
Evil Numbers (Long)
1,689th
Fibonacci
2,758th
Fizz Buzz
1,482nd2,078th
Foo Fizz Buzz Bar
865th
Happy Numbers
1,612th
Happy Numbers (Long)
801st
Leap Years
1,522nd
Leyland Numbers
880th
Niven Numbers
2,490th
Niven Numbers (Long)
1,071st
Odious Numbers
2,486th1,101st1,667th
Odious Numbers (Long)
1,541st
Pascal’s Triangle
1,429th1,653rd
Pernicious Numbers
1,949th
Prime Numbers
2,505th
Prime Numbers (Long)
1,407th
Recamán
586th
Smith Numbers
617th
Sudoku
244th
Van Eck Sequence
791st