%I #20 Sep 09 2020 03:43:20
%S 1,2,4,11,33,144,824,6793,75400,1107853,21021998
%N Number of comparability perfect graphs on n nodes.
%C All comparability graphs are perfect. - _Jakub Jablonski_, Sep 07 2020
%H S. Hougardy, <a href="http://www.or.uni-bonn.de/~hougardy/">Home Page</a>
%H S. Hougardy, <a href="http://dx.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
%E a(11) from _Jakub Jablonski_, Sep 07 2020