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A126745 Number of connected graphs on n nodes with clique number 3. 1
0, 0, 1, 2, 11, 63, 477, 5339, 94535, 2774240, 135794730 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..11.

Keith M. Briggs, Combinatorial Graph Theory

CROSSREFS

A diagonal of triangle in A126744.

Sequence in context: A188648 A114175 A080049 * A179120 A038725 A161947

Adjacent sequences:  A126742 A126743 A126744 * A126746 A126747 A126748

KEYWORD

nonn,hard,more

AUTHOR

N. J. A. Sloane, Feb 18 2007

EXTENSIONS

a(11) from Michael Sollami, Jan 29 2012

STATUS

approved

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Last modified May 30 17:02 EDT 2020. Contains 334728 sequences. (Running on oeis4.)