I dont understand why you would set constants when they are already defined in the standard library

Given "the" triangle of odd numbers...

https://xkcd.com/221/
You might have chosen them randomly but they remain static values that could be hard coded.

I like this Kata! Thank you.

This is the prefered and idiomatic way

nice, but only maths

Needs random tests.

As an aside, this likely has nothing to do with Einstein, the name is merely a tribute to someone I knew many years ago.

Of course, but you need to remeber that this task is designed for starters.

" " is not the only whitespace

Very elegant, I like the use of the Rust idiom

Just started on rust, and I was wondering if this was posible! Awesome