Farhadian, Reza, and Rafael Jakimczuk. “Notes on a General Sequence”. Annales Mathematicae Silesianae 34, no. 2 (May 8, 2020): 193–202. Accessed July 4, 2025. https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/13611.