%I A068051
%S A068051 1,2,4,9,20,49,118,300,765,1998,5255,14027,37670,102095,278262,763022,
%T A068051 2101905,5816142,16153148,45017423,125836711,352723949,991143727,
%U A068051 2791422887,7877935985,22275473767,63096075118,179012076933
%N A068051 Number of n-node connected graphs with one cycle, possibly of length 
               1 or 2.
%H A068051 C. G. Bower, <a href="transforms2.html">Transforms (2)</a>
%F A068051 "DIK" transform of A000081.
%Y A068051 Sequence in context: A000081 A124497 A093637 this_sequence A032289 A006648 
               A128496
%Y A068051 Adjacent sequences: A068048 A068049 A068050 this_sequence A068052 A068053 
               A068054
%K A068051 nonn
%O A068051 1,2
%A A068051 Christian G. Bower (bowerc(AT)usa.net), Feb 12 2002