G.f. satisfies A(x) = x + Product_{n>=2} A(x^n) with A(0) = 1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =4a(7) =4a(8) =8a(9) =8a(10) =13a(11) =15a(12) =26a(13) =26a(14) =41a(15) =48a(16) =73a(17) =80a(18) =119a(19) =136a(20) =198a(21) =225a(22) =313a(23) =367a(24) =518a(25) =585a(26) =797a(27) =941a(28) =1264a(29) =1466