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%I #7 Apr 23 2018 14:24:10
%S 1,1,0,8,3528,18475776,5885188704000
%N Chromatic invariant of 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/ChromaticInvariant.html">Chromatic Invariant</a>
%Y Cf. A295217.
%K nonn,more
%O 1,4
%A _Eric W. Weisstein_, Nov 16 2017
%E a(7) from _Andrew Howroyd_, Apr 23 2018
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