|
%I #6 May 31 2018 08:25:02
%S 1,2,4,12,40,168,784,4272,25504,171168,1242688,9915072,84714112,
%T 783454848,7697178880
%N Number of ways of placing n rooks on an n X n chessboard with the topology of a Klein bottle.
%H R. W. Whitty, <a href="https://dx.doi.org/10.1016/j.disc.2007.07.054">Rook polynomials on two-dimensional surfaces and graceful labellings of graphs</a>, Discrete Math., 308 (2008), 674-683.
%K nonn,more
%O 1,2
%A _N. J. A. Sloane_, Feb 08 2008
|
