The Gaussian-School of Higher-Arithmetic (1831, updated 2022); tutorial #21 page 4.

The Arithmetic of Clocks, page 4.

Due to the limitations of my sketch boundary, I can only ever show six consecutive whole number members of the doubly unbounded (double ended infinite) geometric set. Here I show the circles 2, 1, 0, -1, -2, and -3 but the three inner circles are so tiny that there is no space to show the index.