2530522domain: NAppears in sequencesO.g.f. A(x) satisfies: [x^n] exp(n*A(x)) * (1 - n*x/(1-x)) = 0, for n > 0.at n=8A321087Expansion of 1/sqrt(1 - 4*x^3/(1 - x)^2).at n=21A376809