%I #13 Jun 30 2018 14:51:07
%S 1,2,4,11,32,130,592,3275,19546,126842,865872,6301047,49781998,
%T 450653524
%N Number of bull-free Berge 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="http://dx.doi.org/10.1016/j.disc.2006.05.021">Classes of perfect graphs</a>, Discr. Math. 306 (2006), 2529-2571.
%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 3e9b2ba.
%K nonn,more
%O 1,2
%A _N. J. A. Sloane_, Oct 18 2006
%E a(11)-a(14) added using tinygraph by _Falk Hüffner_, Jun 30 2018
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