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A123463 Number of 3-overlap triangle-free perfect graphs on n nodes. 0
1, 2, 4, 11, 33, 136, 532, 1783, 5549, 17906 (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: A123444 A123473 A123462 * A123468 A123415 A123469
Adjacent sequences: A123460 A123461 A123462 * A123464 A123465 A123466
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
STATUS
approved

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Last modified May 15 01:31 EDT 2024. Contains 372536 sequences. (Running on oeis4.)