An asymmetric combinatorial matrix with two free parameters is factored in 4 different ways. The results are obtained by a combination of guessing and applying combinatorial identities.
@article{bwmeta1.element.doi-10_1515_spma-2017-0020,
author = {Helmut Prodinger},
title = {Factorizations related to some numerical triangles},
journal = {Special Matrices},
volume = {5},
year = {2017},
pages = {290-295},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_1515_spma-2017-0020}
}
Helmut Prodinger. Factorizations related to some numerical triangles. Special Matrices, Tome 5 (2017) pp. 290-295. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_1515_spma-2017-0020/