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%I #7 Mar 21 2018 17:17:31
%S 1,2,73,1872172
%N Chromatic invariant of the n-folded cube graph.
%C a(5) is also the chromatic invariant of the 2-Keller graph. - _Eric W. Weisstein_, Mar 21 2018
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ChromaticInvariant.html">Chromatic Invariant</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/FoldedCubeGraph.html">Folded Cube Graph</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KellerGraph.html">Keller Graph</a>
%K nonn,more
%O 2,2
%A _Eric W. Weisstein_, Nov 16 2017