28908075633domain: NAppears in sequencesG.f. satisfies: A(x) = 1 + Sum_{n>=1} x^n*A_{n-1}(x)^n where A_{n}(x) = A_{n-1}(x) + x^n*A_{n-1}(x)^n for n>0 with A_0(x)=1.at n=27A194563