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A123437
Number of opposition perfect graphs on n nodes.
0
1, 2, 4, 11, 33, 146, 848, 6880, 68743, 778449
OFFSET
1,2
LINKS
S. Hougardy, Home Page
S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
CROSSREFS
Sequence in context: A123459 A123426 A277204 * A123435 A123409 A123472
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
STATUS
approved