Expansion of Product_{k>=1} (1 - x^(4*k))^(4*k) / (1 - x^k)^k.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =9a(5) =20a(6) =36a(7) =62a(8) =106a(9) =184a(10) =302a(11) =503a(12) =829a(13) =1325a(14) =2119a(15) =3367a(16) =5282a(17) =8227a(18) =12740a(19) =19550a(20) =29849a(21) =45300a(22) =68325a(23) =102495a(24) =152998a(25) =227249a(26) =336005a(27) =494597a(28) =724875a(29) =1058213