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%I #9 Aug 15 2019 16:51:36
%S 0,0,0,0,1,4,46,809,27794,1890221,248580644
%N Number of connected graphs on n nodes with chromatic number 5.
%H Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a>
%Y A diagonal of triangle in A126736.
%K nonn
%O 1,6
%A _N. J. A. Sloane_, Feb 16 2007
%E a(11) from _Michael Sollami_, Jan 29 2012
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