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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

REFERENCES

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

LINKS

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

S. Hougardy, Home Page

CROSSREFS

Sequence in context: A280766 A123443 A123427 * A123430 A086690 A059305

Adjacent sequences:  A123418 A123419 A123420 * A123422 A123423 A123424

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 18 2006

STATUS

approved

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Last modified September 26 06:19 EDT 2022. Contains 356987 sequences. (Running on oeis4.)