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%I #9 Aug 15 2015 13:37:53
%S 0,2,3,8,20,54,140,384,1035,2860,7909,22104,61958,174804,494595,
%T 1404976,4001477,11427246,32702021,93773520,269350788,774880304,
%U 2232269163,6438788520,18593124600,53746540770,155510185770,450344561212,1305204921801,3785596629240,10987232275507
%N Total number of nodes in all planted trees on n nodes.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GraphVertex.html">Graph Vertex</a>
%F a(n) = n * A000081(n-1). - _Gerald McGarvey_, Apr 17 2008
%K nonn
%O 1,2
%A _Eric W. Weisstein_, Jun 03 2004
%E More terms from _Vladeta Jovovic_, Jul 11 2007
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