%I #23 May 08 2018 02:38:39
%S 0,0,1,3,15,82,578,6021,101267,2882460,138787233,11117715525,
%T 1459391330953
%N Number of n-node simple graphs having clique number 3.
%C Also, number of n-node simple graphs having independence number 3. - _Andrew Howroyd_, Oct 31 2017
%H Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CliqueNumber.html">Clique Number.</a>
%Y Column 3 of A263341.
%Y Cf. A052450, A052452, A052453, A077392, A077393, A077394.
%K nonn,more
%O 1,4
%A _Eric W. Weisstein_
%E 2 more terms from _Eric W. Weisstein_, Nov 03 2002
%E a(10) from _Keith Briggs_, Mar 15 2006
%E a(11) from _Michael Sollami_, Jan 29 2012
%E a(12) from _Michael Sollami_, Mar 26 2012
%E a(13) from _Brendan McKay_, May 07 2018