Expansion of q^(-1/3) * (eta(q^3) / eta(q))^4 in powers of q.

Terms

a(0) =1a(1) =4a(2) =14a(3) =36a(4) =89a(5) =196a(6) =416a(7) =828a(8) =1600a(9) =2972a(10) =5390a(11) =9504a(12) =16436a(13) =27828a(14) =46364a(15) =75960a(16) =122772a(17) =195728a(18) =308430a(19) =480456a(20) =740921a(21) =1131364a(22) =1712348a(23) =2569500a(24) =3825641a(25) =5652872a(26) =8294612a(27) =12089016a(28) =17508609a(29) =25204428