About this article
Published Online: Apr 09, 2020
Page range: 205 - 217
Received: May 29, 2019
Accepted: Jul 15, 2019
DOI: https://doi.org/10.2478/auom-2020-0014
Keywords
© 2020 Manuel González-Sarabia et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
There is a nice combinatorial formula of P. Beelen and M. Datta for the