@article{JIS_2002__5_2_a4,
     author = {Andrica, Dorin and Tomescu, Ioan},
     title = {On an integer sequence related to a product of trigonometric functions, and its combinatorial relevance},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2002__5_2_a4/}
}