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A123459 Number of strict opposition perfect graphs on n nodes. 0
1, 2, 4, 11, 33, 145, 840, 6757, 66677, 742244 (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: A123416 A123406 A123453 * A123426 A277204 A123437

Adjacent sequences:  A123456 A123457 A123458 * A123460 A123461 A123462

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 18 2006

STATUS

approved

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Last modified January 19 06:28 EST 2021. Contains 340266 sequences. (Running on oeis4.)