Conway chained arrow notation

Okay kiddo, imagine you have a bunch of arrows in a line, pointing from left to right. Each arrow has a number on it, and that number tells you how many arrows come next in the line.

For example, if you start with one arrow that has a 2 on it, that means there will be two more arrows in the line after it. Those two arrows might have numbers on them too, like 3 and 1. This tells you that there will be three more arrows after the first one, and then one more arrow after those three.

This way of writing numbers with arrows is called Conway chained arrow notation, and it helps us talk about really big numbers that would be hard to write out with just regular digits. It's like a secret code for math nerds!