Question

You guys, an interesting fact:
An unproven truth... called Collatz conjecture..

1. start with any number N
2.
(A) if even divide by 2: N = N/2
(B) if odd , N=3*n+1
3. you get another number, repeat 2,3

You'd always end up with a 4,2,1 sequence and this will keep repeating indefinitely.
:)