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A123427 Number of i-triangulated perfect graphs on n nodes. 0
1, 2, 4, 11, 31, 117, 504, 2772, 18738, 158931 (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: A154603 A063254 A123443 * A123421 A123430 A086690

Adjacent sequences:  A123424 A123425 A123426 * A123428 A123429 A123430

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.