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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

S. Hougardy, Home Page

S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.

CROSSREFS

Sequence in context: A123414 A123410 A123434 * A123449 A123404 A178925

Adjacent sequences:  A123421 A123422 A123423 * A123425 A123426 A123427

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 18 2006

STATUS

approved

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Last modified December 6 11:07 EST 2016. Contains 278776 sequences.