term = int(input("Enter a positive integer: "))

if term <= 0:
    print("The integer", term, "is not positive. Please restart.")
else:
    # generate the sequence
    print(term)
    while (term != 1):
        # calculate next term
        if term % 2 == 0: # even
            term = term // 2
        else: # odd
            term = 3*term + 1
        print(term)