User blog:Alemagno12/A function with the same growth rate as BMS

Definitions:

A string is a tuple where all of its elements are non-negative integers. We represent the string (a,b,c,...) as (a)(b)(c)... (the parentheses can be removed if the number is a 1-digit number)

A digit is an element of a string.

A level-n separator group is a group of digits

[WIP]