def collatz(number):
    if(number % 2 == 0):
        print(number/2)
        return(number/2)
    else:
        print(((3 * number) + 1))
        return((number*3) + 1)

_number=None

while True:
    print("Please enter an integer.")
    try:
        _number=int(str(raw_input()))
    except ValueError:
        continue
    else:
         while (_number != 1):
            _number = collatz(_number)
         print("We made it to 1!")
         break