Adegoke, K., R. Frontczak, and T. Goy. “Special Formulas Involving Polygonal Numbers and Horadam Numbers”. Carpathian Mathematical Publications 13, no. 1 (June 30, 2021): 207–216. Accessed May 4, 2024. https://journals.pnu.edu.ua/index.php/cmp/article/view/4565.