Abundant Numbers
803rd
Abundant Numbers (Long)
351st
Arithmetic Numbers
405th
Catalan Numbers
711th
Collatz
335th
Divisors
4,038th1,899th
Evil Numbers
1,491st
193rd
Evil Numbers (Long)
1,503rd
Fibonacci
2,620th
Fizz Buzz
2,288th3,469th
Foo Fizz Buzz Bar
1,291st
Happy Numbers
1,190th
Happy Numbers (Long)
843rd
Leap Years
1,274th
Leyland Numbers
870th
Niven Numbers
2,141st
Niven Numbers (Long)
1,026th
Odious Numbers
2,216th1,088th1,575th
Odious Numbers (Long)
1,362nd
Pascal’s Triangle
1,382nd1,548th
Pernicious Numbers
1,706th
Prime Numbers
1,793rd
Prime Numbers (Long)
1,247th
Recamán
647th
Smith Numbers
631st
Sudoku
303rd
Van Eck Sequence
702nd