The iteration (or sequence):

```
n is a positive integer
0.5n if n is even
3n + 1 if n is odd
```

Wow plots! These were generated by preforming the sequence on a large set of numbers and recording the number of iterations it took to reach 1.

What's cool is that this sequence is easy to parallelize. Boom, lets use a GPU. The code was written using the native Rust implementation of WebGPU: wgpu.

Read more on Wikipedia.