LOPEZ , Grace Ann. On Triangle of Narayana Numbers. International Journal of Education, Research, and Innovation Perspectives, Philippines, v. 2, n. 8, p. 815–819, 2026. DOI: 10.5281/zenodo.21899476. Disponível em: https://ijerip.erio.org.ph/index.php/articles/article/view/1482. Acesso em: 24 aug. 2026.