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Numbers of undirected cycles in the n X n bishop graph.
2

%I #9 Feb 16 2025 08:33:21

%S 0,3,106,17367,24601058,638520866656,169298265484672524,

%T 1292856744880357036357430

%N Numbers of undirected cycles in the n X n bishop graph.

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BishopGraph.html">Bishop Graph</a>

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a>

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

%K nonn,changed

%O 2,2

%A _Eric W. Weisstein_, Dec 28 2013

%E a(7) corrected and a(8)-a(9) from _Andrew Howroyd_, May 08 2017