SINHA, Ritam. Proof Without Words : The Sum of the First n Odd Integers is a Perfect Square. Ohio Journal of School Mathematics, [S. l.], v. 89, n. 1, 2022. Disponível em: https://ohiomathjournal.org/index.php/OJSM/article/view/8790. Acesso em: 6 may. 2024.