Also known as the Collatz Conjecture, this simulates with different numbers. How it works is: If number is odd - multiply by 3 and add 1. If number is even - divide by 2. This will work UNLESS scratch forces it to be an e+ number. You will reach the loop 4-2-1-4-2-1-4-2-1.... if you use a positive number (0 isn't positive.)
