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A123430 Number of (K_5,P_5)-free Berge perfect graphs on n nodes. 0
1, 2, 4, 11, 31, 124, 565, 3162, 19531, 132566, 961115, 7402630, 60209764 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..13.

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 6c1dbe4.

CROSSREFS

Sequence in context: A123443 A123427 A123421 * A086690 A059305 A191586

Adjacent sequences: A123427 A123428 A123429 * A123431 A123432 A123433

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 18 2006

EXTENSIONS

a(11)-a(13) added using tinygraph by Falk Hüffner, Jun 30 2018

STATUS

approved

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Last modified March 22 15:35 EDT 2023. Contains 361432 sequences. (Running on oeis4.)