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A123437 Number of opposition perfect graphs on n nodes. 0

%I

%S 1,2,4,11,33,146,848,6880,68743,778449

%N Number of opposition perfect graphs on n nodes.

%H S. Hougardy, <a href="http://www.or.uni-bonn.de/~hougardy/">Home Page</a>

%H S. Hougardy, <a href="https://doi.org/10.1016/j.disc.2006.05.021">Classes of perfect graphs</a>, Discr. Math. 306 (2006), 2529-2571.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Oct 18 2006

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Last modified January 28 14:40 EST 2023. Contains 359895 sequences. (Running on oeis4.)