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A123421 Number of doc-free Berge perfect graphs on n nodes. 0
1, 2, 4, 11, 31, 122, 560, 3395, 24891, 215455 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
S. Hougardy, Home Page
S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
CROSSREFS
Sequence in context: A280766 A123443 A123427 * A123430 A086690 A059305
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
STATUS
approved

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Last modified May 19 14:45 EDT 2024. Contains 372698 sequences. (Running on oeis4.)