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Number of connected graceful graphs on n edges.
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%I #11 Jun 20 2019 08:21:45

%S 1,1,3,5,11,28,79,227,701,2302,8071,29502

%N Number of connected graceful graphs on n edges.

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

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/EdgeCount.html">Edge Count</a>

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

%e 1 edge: P_2

%e 2 edges: P_3

%e 3 edges: K_1,3 (claw), P_4, C_3

%e 4 edges: fork graph, P_5, paw graph, C_4, S_5

%K nonn

%O 1,3

%A _Eric W. Weisstein_, Jun 06 2019

%E a(12) from _Eric W. Weisstein_, Jun 20 2019