1138638domain: NAppears in sequencesE.g.f. A(x) satisfies: A'(x) = B(x)*C(x) such that B(x)^2 - A(x)^2 = 3 and C(x)^2 - A(x)^2 = 8, where B(x) and C(x) are the e.g.f.s of A292122 and A292123, respectively.at n=7A292121