%I A066399
%S A066399 0,1,4,39,616,13505,379296,12995983,525688192,24519144609,1295527513600,
%T A066399 76481653648631,4989249262503936,356408413864589281,27670449142629400576,
%U A066399 2319870547729387929375,208886312501433616531456,20104397299878424990749377
%V A066399 0,1,-4,39,-616,13505,-379296,12995983,-525688192,24519144609,-1295527513600,
%W A066399 76481653648631,-4989249262503936,356408413864589281,-27670449142629400576,
%X A066399 2319870547729387929375,-208886312501433616531456,20104397299878424990749377
%N A066399 From reversion of e.g.f. for squares.
%H A066399 <a href="Sindx_Res.html#revert">Index entries for reversions of series</
               a>
%p A066399 read transforms; add(n^2*x^n/n!,n=1..30); series(%,x,31): seriestoseries(%,
               'revogf'); SERIESTOLISTMULT(%);
%p A066399 with(powseries):powcreate(t(n)=n^2/n!):seq(n!*coeff(tpsform(reversion(t),
               x,19),x,n),n=0..18); spec:=[A,{A=Prod(Z,Set(A),Set(B)),B=Cycle(A)},
               labeled];seq(combstruct[count](spec,size=n), n=0..18); - Vladeta 
               Jovovic (vladeta(AT)eunet.rs), May 29 2007
%Y A066399 Sequence in context: A046449 A068187 A024055 this_sequence A065760 A132612 
               A129463
%Y A066399 Adjacent sequences: A066396 A066397 A066398 this_sequence A066400 A066401 
               A066402
%K A066399 sign
%O A066399 0,3
%A A066399 N. J. A. Sloane (njas(AT)research.att.com), Dec 25 2001