Search: id:A141382
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%I A141382
%S A141382 1,1,6,58,702,9830,152632,2565042,45938878,867667140,17154629472,
%T A141382 353091007048,7534733877540,166160874412976,3777158124019664,
%U A141382 88326122515058436,2121170864722835600,52242518805270485716
%N A141382 G.f. satisfies: A(x) = x + A(A(A(A(x)))^2).
%F A141382 G.f. satisfies: A( x - A(A(A(x))^2) ) = x.
%e A141382 G.f.: A(x) = x + x^2 + 6*x^3 + 58*x^4 + 702*x^5 + 9830*x^6 +...
%e A141382 Related expansions:
%e A141382 A(A(x)) = x + 2*x^2 + 14*x^3 + 147*x^4 + 1890*x^5 + 27732*x^6 +...
%e A141382 A(A(A(x))) = x + 3*x^2 + 24*x^3 + 273*x^4 + 3730*x^5 + 57488*x^6 +...
%e A141382 A(A(A(A(x)))) = x + 4*x^2 + 36*x^3 + 442*x^4 + 6412*x^5 + 103890*x^6 
               +...
%e A141382 A(A(A(A(x)))^2) = x^2 + 6*x^3 + 58*x^4 + 702*x^5 + 9830*x^6 +...
%e A141382 The series reversion of A(x) = x - A(A(A(x))^2), where
%e A141382 A(A(A(x))^2) = x^2 + 4*x^3 + 33*x^4 + 358*x^5 + 4650*x^6 + 68168*x^7 
               +...
%o A141382 (PARI) {a(n)=local(A=x+x^2);for(i=1,n,A=x+subst(A,x,subst(A^2,x,subst(A,
               x,A+x*O(x^n)))));polcoeff(A,n)}
%Y A141382 Cf. A141380, A141381, A141383; A141371.
%Y A141382 Sequence in context: A034237 A004301 A073848 this_sequence A034982 A156147 
               A024269
%Y A141382 Adjacent sequences: A141379 A141380 A141381 this_sequence A141383 A141384 
               A141385
%K A141382 nonn
%O A141382 1,3
%A A141382 Paul D. Hanna (pauldhanna(AT)juno.com), Jun 28 2008

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