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%I #8 Apr 23 2023 12:24:53
%S 0,0,9,87,2940,67392,6075837,442152975,133476737988
%N Number of vertex cuts 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/VertexCut.html">Vertex Cut</a>
%F a(n) = 2^ceiling(n^2/2) - 1 - A290719(n). - _Pontus von Brömssen_, Apr 23 2023
%Y Cf. A290719.
%K nonn,more
%O 1,3
%A _Eric W. Weisstein_, Apr 23 2023
%E a(8)-a(9) (based on data in A290719) from _Pontus von Brömssen_, Apr 23 2023
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