User blog comment:Bubby3/Letter notation extension to R and higher letters/@comment-39541634-20191216055735/@comment-24725252-20191219174110

p*(10/p)^n came from a function that should range from p and 10 as n goes from 0 to 1. For example, when p=2, it is 2*(10/2)^n= 2*5^n, which ranges from 2 and 10.

A more complicated example is R2.01 = (G0)|2.01