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%I #3 Mar 30 2012 18:36:39
%S 1,1,2,3,6,15,43,135,462,1708,6752,28302,125036,579709,2811084,
%T 14216095,74788529,408388370,2310191935,13514877249,81639455600,
%U 508524173808,3262111727548,21525758405136,145957394683691,1015949479338974
%N G.f. satisfies: A(x)*(1-x) = 1 + x^2*A(x*A(x)).
%K nonn
%O 0,3
%A _Paul D. Hanna_, Oct 16 2003
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