The formula for this species is written in two ways.

The book did not exist wherein those formulas were written.

These formula can be written in a shorter way:

These formulas and their names are written following rules that give a lot of informations about the compounds.

Hence, in this specific case the formula can be also written with the following notation:

This formula can also be written in sigma notation as:

Consequently, the formula for the Graham number can also be written as follows:

These formulas can also be written using Lagrange's notation.

The formula, obviously, is already written in concrete.

The melodic formula that lies at its base was written as an example during a composition seminar.