-68992domain: ZAppears in sequencesG.f.: A(q) = exp( Sum_{n>=1} A002129(n) * 2*A006519(n) * q^n/n ).at n=41A161800G.f. is Q_1(q) where q*Q_1(q^4) is a series quadrisection of the g.f. of A161800.at n=10A161802Expansion of e.g.f. tanh(x/(1 - x)).at n=8A317411