Expansion of ((eta(q)eta(q^3))/eta(q^2)^2)^2 in powers of q.

Terms

a(0) =1a(1) =-2a(2) =3a(3) =-8a(4) =15a(5) =-24a(6) =39a(7) =-64a(8) =102a(9) =-152a(10) =225a(11) =-336a(12) =492a(13) =-700a(14) =987a(15) =-1392a(16) =1941a(17) =-2664a(18) =3630a(19) =-4936a(20) =6660a(21) =-8896a(22) =11817a(23) =-15648a(24) =20604a(25) =-26942a(26) =35070a(27) =-45512a(28) =58800a(29) =-75576