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A123440 Number of P_4-reducible perfect graphs on n nodes. 0
1, 2, 4, 11, 27, 76, 212, 631, 1893, 5846 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

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

LINKS

S. Hougardy, Home Page

CROSSREFS

Sequence in context: A159338 A159339 A159337 * A071314 A123441 A086441

Adjacent sequences:  A123437 A123438 A123439 * A123441 A123442 A123443

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 18 2006

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.