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%I #7 Dec 27 2017 03:12:31
%S 0,1,24,7727,2494936740,25307171607331423,
%T 15900270561859760919435630132,
%U 1222687716170419330982627155048858310990681,381227447067591911693777422129578054172394402181491165828756232
%N Number of edge covers 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/EdgeCover.html">Edge Cover</a>
%Y Cf. A297048, A297050.
%K nonn,more
%O 1,3
%A _Eric W. Weisstein_, Dec 24 2017
%E a(6)-a(9) from _Andrew Howroyd_, Dec 27 2017
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