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Number of (non-null) connected induced subgraphs in the n X n black bishop graph.
4

%I #12 Aug 16 2017 03:56:25

%S 1,3,22,168,5251,194751,27478594,3852814320,2065546517563

%N Number of (non-null) connected induced subgraphs 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/ConnectedGraph.html">Connected Graph</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Vertex-InducedSubgraph.html">Vertex-Induced Subgraph</a>

%Y Cf. A289145, A290769.

%K nonn,more

%O 1,2

%A _Eric W. Weisstein_, Aug 09 2017

%E a(8)-a(9) from _Andrew Howroyd_, Aug 15 2017