Expansion of Product_{k>=1} (1 - x^(5*k))^(5*k) / (1 - x^k)^k.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =13a(5) =19a(6) =43a(7) =71a(8) =130a(9) =217a(10) =380a(11) =619a(12) =1049a(13) =1685a(14) =2757a(15) =4404a(16) =7027a(17) =11014a(18) =17326a(19) =26820a(20) =41488a(21) =63514a(22) =96970a(23) =146808a(24) =221659a(25) =332212a(26) =496439a(27) =737535a(28) =1091938a(29) =1608564