A234636 Numbers of undirected cycles in the n X n bishop graph.

0, 3, 106, 17367, 24601058, 638520866656, 169298265484672524, 1292856744880357036357430

Offset

2,2

Links

Table of n, a(n) for n=2..9.

Eric Weisstein's World of Mathematics, Bishop Graph

Eric Weisstein's World of Mathematics, Graph Cycle

Formula

a(n) = A234603(n) + A234630(n).

Crossrefs

Sequence in context: A226074 A037115 A343214 * A213862 A245657 A139921

Adjacent sequences: A234633 A234634 A234635 * A234637 A234638 A234639

Keyword

nonn

Author

Eric W. Weisstein, Dec 28 2013

Extensions

a(7) corrected and a(8)-a(9) from Andrew Howroyd, May 08 2017

Status

approved