collatz.py -- A very simple demonstration of the Collatz conjecture, an unsolved problem in mathematics, in Python. Applies the rules of the conjecture in a repeated loop on some integer x, and outputs the number of steps taken to reach 1.

collatz.py

import math 

x = 99 # Select a starting point here
i = 0
running = True

while running:
    i += 1
    if x % 2 == 0:
        x = x / 2
        print(int(x))
    else:
        x = 3*x + 1
        print(int(x))
    if x == 1:
        print("Steps taken: " + str(i))
        running = False