@article{CMUC_1985__26_2_a10, author = {Koubek, V\'aclav and R\"odl, Vojt\v{e}ch}, title = {Note on the number of monoids of order $n$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {309--314}, publisher = {mathdoc}, volume = {26}, number = {2}, year = {1985}, mrnumber = {803927}, zbl = {0573.20064}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1985__26_2_a10/} }