@article{01732182,
title = {A generating functions proof of a curious identity.},
journal = {Integers},
volume = {2},
year = {2002},
zbl = {1125.05300},
language = {en},
url = {http://dml.mathdoc.fr/item/01732182}
}
Panholzer, Alois; Prodinger, Helmut. A generating functions proof of a curious identity.. Integers, Tome 2 (2002) . http://gdmltest.u-ga.fr/item/01732182/