Abundant Numbers
1,337th
Abundant Numbers (Long)
355th
Arithmetic Numbers
340th
Catalan Numbers
768th
Collatz
110th
Divisors
3,982nd1,692nd
Evil Numbers
1,630th
222nd
Evil Numbers (Long)
1,608th
Fibonacci
2,600th
Fizz Buzz
1,506th1,988th
Foo Fizz Buzz Bar
814th
Happy Numbers
1,551st
Happy Numbers (Long)
744th
Leap Years
1,224th
Leyland Numbers
847th
Niven Numbers
2,357th
Niven Numbers (Long)
1,011th
Odious Numbers
2,396th1,079th1,575th
Odious Numbers (Long)
1,465th
Pascal’s Triangle
1,356th1,577th
Pernicious Numbers
1,825th
Prime Numbers
2,364th
Prime Numbers (Long)
1,294th
Recamán
569th
Smith Numbers
576th
Sudoku
231st
Van Eck Sequence
733rd