A123455 - OEIS

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A123455

Number of slightly triangulated perfect graphs on n nodes.

0

1, 2, 4, 11, 33, 147, 896, 8682, 131293, 3059990

(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: A123442 A123405 A123457 * A123447 A123461 A123407

Adjacent sequences: A123452 A123453 A123454 * A123456 A123457 A123458

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 18 2006

STATUS

approved