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%I #16 Aug 16 2019 10:49:04
%S 0,1,2,4,12,30,85,300
%N Number of (not necessarily connected) ungraceful graphs on n nodes.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GracefulGraph.html">Graceful Graph</a>
%Y Cf. A308557 (connected ungraceful graphs).
%K nonn,more
%O 1,3
%A _Eric W. Weisstein_, Jun 07 2019
%E a(8) from _Eric W. Weisstein_, Aug 16 2019
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