[1] **viXra:0910.0026 [pdf]**
*submitted on 16 Oct 2009*

**Authors:** Hideyuki Ohtsuka

**Comments:** 2 Pages

In this paper, we show a geometry approach to the expansion of
(1 + x + x^{2} + ... + x^{n})^{3}. This proof is a "Proof Without Words"

**Category:** Algebra