%I A036655
%S A036655 1,2,2,6,2,18,2,46,14,126,2,454,2,1266,134,4222,2,14202,2,46406,
%T A036655 1274,155502,2,531790,122,1792810,13802,6126334,2,21032794,2,72121854,
%U A036655 155510,248396798,1382,857944150,2,2964896882,1792818,10269600622
%N A036655 Numbers d_n used in recurrence for series-parallel numbers.
%D A036655 J. Riordan, An Introduction to Combinatorial Analysis, foot of p. 141.
%F A036655 G.f.: S'*(1-S)/(1+S), where S = g.f. for A000084.
%Y A036655 Sequence in context: A098555 A057562 A102628 this_sequence A098792 A061057 
               A038667
%Y A036655 Adjacent sequences: A036652 A036653 A036654 this_sequence A036656 A036657 
               A036658
%K A036655 nonn,easy
%O A036655 0,2
%A A036655 N. J. A. Sloane (njas(AT)research.att.com).