%I #16 Jun 20 2018 16:55:22

%S 1,2,8,64,1024,32767,2096731,268232643,68572495926,35005772219631,

%T 35642624717803839

%N Number of labeled 5-colorable (i.e., chromatic number <= 5) graphs on n nodes.

%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 8c665c7

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/n-ColorableGraph.html">n-Colorable Graph</a>

%Y Cf. A047864, A084279, A084280, A084282.

%K nonn,more

%O 1,2

%A _Eric W. Weisstein_, May 25 2003

%E a(7)-a(11) added using tinygraph by _Falk Hüffner_, Jun 20 2018