149045domain: NAppears in sequencesArises from color-symmetrized counting of tensor invariants.at n=10A232218G.f.: A(x) = 1/C(-x*T(x)^3), where C(x) = 1 + x*C(x)^2 is the g.f. of A000108 and T(x) = 1 + x*T(x)^3 is the g.f. of A001764.at n=9A347953