%I A099438
%S A099438 0,0,1,0,4,3,32,67,930
%N A099438 Number of simple connected class-2 graphs on n nodes.
%H A099438 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Class2Graph.html">Class 2 Graph</a>
%Y A099438 Cf. A099437.
%Y A099438 Sequence in context: A072044 A127138 A064081 this_sequence A002178 A013558 
               A161000
%Y A099438 Adjacent sequences: A099435 A099436 A099437 this_sequence A099439 A099440 
               A099441
%K A099438 nonn,more
%O A099438 1,5
%A A099438 Eric Weisstein (eric(AT)weisstein.com), Oct 15, 2004