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A123424
Number of gem-free Berge perfect graphs on n nodes.
0
1, 2, 4, 11, 32, 130, 625, 3964, 30929, 297142, 3413585, 46643553
OFFSET
1,2
LINKS
S. Hougardy, Home Page
S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 3e9b2ba.
CROSSREFS
Sequence in context: A123414 A123410 A123434 * A123449 A123404 A178925
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
EXTENSIONS
a(11) and a(12) added using tinygraph by Falk Hüffner, Jun 29 2018
STATUS
approved