A361171 - OEIS

%I #17 Mar 03 2023 20:00:20

%S 0,0,1,13,197,4729,156806,7035482,505265569,82612843683,

%T 33651820752580,23922790371389972,25614853328191562332,

%U 43322613720440154974138,128405885225433787867253690,738840753928503040569961869076,8481241718402438554921627740308746,179685856472407342498054958799766397100

%N Number of chordless cycles in the n X n king graph.

%C Using the convention that chordless cycles have length >= 4.

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

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

%Y Cf. A140519, A234622, A297664, A357501.

%K nonn

%O 1,4

%A _Eric W. Weisstein_, Mar 03 2023

%E a(7)-a(18) from _Andrew Howroyd_, Mar 03 2023