Expansion of Product_{k>=1} ((1 + 2*x^k) * (1 + 3*x^k)).

Terms

a(0) =1a(1) =5a(2) =11a(3) =30a(4) =66a(5) =115a(6) =252a(7) =445a(8) =762a(9) =1350a(10) =2238a(11) =3690a(12) =5909a(13) =9480a(14) =14460a(15) =22475a(16) =34326a(17) =51150a(18) =76398a(19) =111810a(20) =163350a(21) =236610a(22) =339667a(23) =482040a(24) =684060a(25) =960780a(26) =1340953a(27) =1863570a(28) =2573022a(29) =3533310