%I #6 May 06 2019 20:56:25
%S 0,1,4,96,25376,32132352,1295557991168,229067542255136768,
%T 2627612220112334649458688
%N Number of (undirected) Hamiltonian paths in the n X n black bishop graph.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/BlackBishopGraph.html">Black Bishop Graph</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/HamiltonianPath.html">Hamiltonian Path</a>
%K nonn,hard,more
%O 1,3
%A _Eric W. Weisstein_, May 06 2019