Seibert J, Trojovský P. On divisibility of the numbers H_n(1), H_n(2) and H_n(3). Ann. Math. Sil. [Internet]. 2003 Sep. 30 [cited 2025 Apr. 24];17:41-5. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/14099