@article{JIS_2000__3_2_a2,
     author = {Frey, Darrin D. and Sellers, James A.},
     title = {Jacobsthal numbers and alternating sign matrices},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2000__3_2_a2/}
}