a(n) = [x^n] Product_{k>=1} 1/(1 - x^(k^3))^n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =35a(5) =126a(6) =462a(7) =1716a(8) =6443a(9) =24391a(10) =92928a(11) =355862a(12) =1368458a(13) =5280744a(14) =20438148a(15) =79302960a(16) =308385355a(17) =1201536286a(18) =4689450021a(19) =18330233110a(20) =71747534460a(21) =281177705490