User blog comment:XXxKennyDashxXx/Basic Separator Matrix Notation/@comment-25601061-20161004230053

Cool, a new notation. I haven't heard from you in a long time.

Here's more analysis:

a(1)b has growth rate w^w

a(1)(0)b has growth rate w^(w+1)

a(1)(0)(1)b has growth rate w^(w2)

a(1)(1)b has growth rate w^w^2

a(2)b has growth rate w^w^w

...