A123417 - OEIS

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A123417

Number of Delta<=6 Berge perfect graphs on n nodes.

0

1, 2, 4, 11, 33, 148, 906, 7981, 84637, 922648

(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: A123433 A123452 A123436 * A123419 A123451 A123470

Adjacent sequences: A123414 A123415 A123416 * A123418 A123419 A123420

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 18 2006

STATUS

approved