User blog comment:Swooped me in one hit/Attempting to redesign my notation./@comment-25601061-20170219135448/@comment-30754445-20170219184051

He means that all you've given is a list of numbers. That's not a "notation".

A "notation" is a general method to write numbers. For example, one could write:

@a = a^2

This means that @[any number] will be that number squared.

Can you tell me what @7 is?