Search: id:A088791
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%I A088791
%S A088791 1,1,1,2,8,46,337,2976,30627,359222,4725968,68903766,1102712316,
%T A088791 19219507328,362428546833,7352854216056,159705991698432,
%U A088791 3697928742242694,90933523698184947,2366758931071064064
%N A088791 Coefficient of x^n in A(x)^n is A000670(n), which gives preferential 
               arrangements of n labeled elements.
%F A088791 G.f. satisfies: A(x)^2 = A(x*A(x)) + x*A(x).
%Y A088791 Sequence in context: A145844 A005840 A161881 this_sequence A111552 A128085 
               A052801
%Y A088791 Adjacent sequences: A088788 A088789 A088790 this_sequence A088792 A088793 
               A088794
%K A088791 nonn
%O A088791 0,4
%A A088791 Paul D. Hanna (pauldhanna(AT)juno.com), Oct 16 2003

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