%N Number of forests with n nodes that are perfect graphs.
%C This is different from A005195, although the initial terms agree. - _N. J. A. Sloane_, Dec 20 2008
%D S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
%H S. Hougardy, <a href="http://www.or.uni-bonn.de/~hougardy/">Home Page</a>
%A _N. J. A. Sloane_, Oct 18 2006, Jul 03 2008