G.f. satisfies A(x) = A(x^2)*A(x^3) / (1-x).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =11a(7) =13a(8) =20a(9) =26a(10) =36a(11) =44a(12) =66a(13) =78a(14) =106a(15) =132a(16) =174a(17) =208a(18) =282a(19) =332a(20) =430a(21) =520a(22) =656a(23) =774a(24) =1000a(25) =1166a(26) =1456a(27) =1731a(28) =2131a(29) =2486