@article{05138319, title = {Sums of squares and products of Jacobsthal numbers.}, journal = {Journal of Integer Sequences [electronic only]}, volume = {10}, year = {2007}, zbl = {1116.11010}, language = {en}, url = {http://dml.mathdoc.fr/item/05138319} }
Čerin, Zvonko. Sums of squares and products of Jacobsthal numbers.. Journal of Integer Sequences [electronic only], Tome 10 (2007) . http://gdmltest.u-ga.fr/item/05138319/