Expansion of g.f. (1 + x) * (1 + x^2) * Product_{k>=1} (1 + x^k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =8a(6) =11a(7) =14a(8) =18a(9) =23a(10) =29a(11) =36a(12) =45a(13) =55a(14) =67a(15) =82a(16) =99a(17) =119a(18) =143a(19) =170a(20) =202a(21) =240a(22) =283a(23) =333a(24) =391a(25) =457a(26) =533a(27) =621a(28) =721a(29) =835