17804811domain: NAppears in sequencesE.g.f. C(x) satisfies: C'(x) = A(x)*B(x) such that C(x)^2 - A(x)^2 = 8 and C(x)^2 - B(x)^2 = 5, where A(x) and B(x) are the e.g.f.s of A292121 and A292122, respectively.at n=8A292123