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

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

Offset: 2

Author

Eric W. Weisstein, Dec 28 2013

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Bishop Graph
• Eric Weisstein's World of Mathematics, Graph Cycle

Formula

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

Extensions

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