Worth noting that the assumption that the Collatz function terminates ('while n != 1') is actually an open mathematical question. It's been checked for initial

Worth noting that the assumption that the Collatz function terminates ('while n != 1') is actually an open mathematical question. It's been checked for initial values up to the godzillions, but there is no proof yet that this function will always terminate for all inputs. Paul Erdos was reported to have said "Mathematics is not yet ready for such problems".