A234603 Numbers of undirected cycles in the n X n black bishop graph.

2, 53, 12424, 12300529, 504040211574, 84649132742336262, 1080241691057266946999792

Offset

3,1

Links

Table of n, a(n) for n=3..9.

Eric Weisstein's World of Mathematics, Black Bishop Graph

Eric Weisstein's World of Mathematics, Graph Cycle

Crossrefs

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

Sequence in context: A176943 A176946 A265443 * A087865 A278843 A083471

Adjacent sequences: A234600 A234601 A234602 * A234604 A234605 A234606

Keyword

nonn,hard,more

Author

Eric W. Weisstein, Dec 28 2013

Extensions

a(7) from Eric W. Weisstein, Jan 04 2014

a(3) prepended and a(8)-a(9) from Andrew Howroyd, May 08 2017

Status

approved