On the Polynomial Structure of rk(n). Indian Journal of Advanced Mathematics (IJAM), [S. l.], v. 3, n. 2, p. 4–5, 2024. DOI: 10.54105/ijam.A1162.103223. Disponível em: https://www.journals.latticescipub.com/index.php/ijam/article/view/712.. Acesso em: 23 jun. 2025.