# Collatz conjecture

- if the number is even, divide it by two.
- if the number is odd, triple it and add one.

```
n --> n / 2 if even
n --> 3n + 1 if odd
```

- A Collatz chain is a set of numbers yielded by recursive running of this process
- Collatz chains are theorized (but not yet proven) to eventually reach “1”.