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Number of (undirected) paths in the n X n queen graph.
0

%I #8 Sep 09 2017 03:21:03

%S 0,30,81576,47827557564

%N Number of (undirected) paths in the n X n queen graph.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GraphPath.html">Graph Path</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/QueenGraph.html">Queen Graph</a>

%Y Cf. A158663, A158664, A234626.

%K nonn,more

%O 1,2

%A _Eric W. Weisstein_, Sep 07 2017

%E a(4) from _Andrew Howroyd_, Sep 08 2017