%I A099437
%S A099437 0,0,1,1,6,11,50
%N A099437 Number of simple class-2 graphs on n nodes.
%H A099437 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Class2Graph.html">Class 2 Graph</a>
%Y A099437 Cf. A099438.
%Y A099437 Sequence in context: A038265 A015440 A094555 this_sequence A077701 A152448 
               A073219
%Y A099437 Adjacent sequences: A099434 A099435 A099436 this_sequence A099438 A099439 
               A099440
%K A099437 nonn,more
%O A099437 1,5
%A A099437 Eric Weisstein (eric(AT)weisstein.com), Oct 15, 2004