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Number of connected graphs on n nodes with clique number 4.
1

%I #12 Aug 15 2019 16:53:14

%S 0,0,0,1,3,25,266,4646,136935,7121703,647596643

%N Number of connected graphs on n nodes with clique number 4.

%H Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a>

%Y A diagonal of triangle in A126744.

%K nonn,hard,more

%O 1,5

%A _N. J. A. Sloane_, Feb 18 2007

%E a(11) from _Michael Sollami_, Jan 29 2012