66975domain: NAppears in sequencesWhere records occur in A119451.at n=21A119453G.f. satisfies A(x) = 1 + x*(1 + x*A(x)^6)^3.at n=7A137969G.f.: A(q) = exp( Sum_{n>=1} sigma(n) * 3*A038500(n) * q^n/n ), where A038500(n) = highest power of 3 dividing n.at n=13A163129A trisection of A163129.at n=4A163131