2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60406Instead of dealing with cumbersome binomial identities, we prove Callan's result using generating functions.This is related to the recent math.CO/0011081CombinatoricsThe Eigenvectors of the Right-Justified Pascal Triangle: A Shorter Proof with Generating Functionstext