@article{JIS_2014__17_3_a7,
     author = {Chern, Shane},
     title = {Fermat numbers in multinomial coefficients},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2014__17_3_a7/}
}