A234603 - OEIS

%I #12 May 09 2017 00:07:42

%S 2,53,12424,12300529,504040211574,84649132742336262,

%T 1080241691057266946999792

%N Numbers of undirected cycles 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/GraphCycle.html">Graph Cycle</a>

%Y Cf. A234630, A234636, A234624, A282889, A234632.

%K nonn,hard,more

%O 3,1

%A _Eric W. Weisstein_, Dec 28 2013

%E a(7) from _Eric W. Weisstein_, Jan 04 2014

%E a(3) prepended and a(8)-a(9) from _Andrew Howroyd_, May 08 2017