A297049 Number of edge covers in the n X n black bishop graph.

0, 1, 24, 7727, 2494936740, 25307171607331423, 15900270561859760919435630132, 1222687716170419330982627155048858310990681, 381227447067591911693777422129578054172394402181491165828756232

Offset

1,3

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Black Bishop Graph

Eric Weisstein's World of Mathematics, Edge Cover

Crossrefs

Cf. A297048, A297050.

Sequence in context: A275054 A088616 A158042 * A147860 A159409 A167824

Adjacent sequences: A297046 A297047 A297048 * A297050 A297051 A297052

Keyword

nonn,more

Author

Eric W. Weisstein, Dec 24 2017

Extensions

a(6)-a(9) from Andrew Howroyd, Dec 27 2017

Status

approved