%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