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%I #8 May 05 2017 12:31:44
%S 0,7,8215,2080941496,269529670654115055
%N Numbers of undirected cycles in the n-queen graph.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/QueenGraph.html">Queen Graph</a>
%K nonn
%O 1,2
%A _Eric W. Weisstein_, Dec 28 2013