Search: id:A139605
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%I A139605
%S A139605 1,1,1,1,1,3,1,1,4,1,7,4,6,1,1,11,4,7,1,15,30,5,25,10,10,1,1,26,34,32,
%T A139605 11,15,1,31,146,57,34,6,90,120,15,65,20,15,1
%N A139605 Weights for expansion of (f(x)D_x)^n : coefficients of A-polynomials 
               of Comtet.
%C A139605 This entry and the references differ slightly among themselves in the 
               order of coefficients for higher order terms. Table on p. 167 of 
               Comtet has at least one index error.
%D A139605 F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-like 
               Structures, (1997), Cambridge University Press, p. 386
%D A139605 L. Comtet, Une formule explicite pour puisances successives de l'operateur 
               de derivation de Lie, Comtes Rendus Acad. Sc. Paris, Serie A tome 
               276 (1973), pp. 165 - 168
%H A139605 T. Copeland, <a href="http://tcjpn.spaces.live.com/default.aspx">Mathemagical 
               Forests </a>, (June 2008)
%Y A139605 Sequence in context: A138684 A132442 A074927 this_sequence A098712 A023579 
               A023577
%Y A139605 Adjacent sequences: A139602 A139603 A139604 this_sequence A139606 A139607 
               A139608
%K A139605 nonn
%O A139605 1,6
%A A139605 Tom Copeland (tcjpn(AT)msn.com), Jun 12 2008

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