A391631 - OEIS

%I #8 Feb 18 2026 22:53:59

%S 2,7,334,58875,33405756,68716991862,562949918300022,

%T 18446744073262895647,2417851639229253060330052

%N Number of mutual-visibility sets in the n X n rook complement graph.

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

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

%K nonn,more

%O 1,1

%A _Eric W. Weisstein_, Dec 14 2025

%E a(6)-a(9) from _Andrew Howroyd_, Jan 19 2026