Expansion of eta(q) * eta(q^3) * eta(q^5) * eta(q^15) in powers of q.

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =-1a(4) =1a(5) =1a(6) =0a(7) =3a(8) =1a(9) =-1a(10) =-4a(11) =1a(12) =-2a(13) =0a(14) =-1a(15) =-1a(16) =2a(17) =-1a(18) =4a(19) =-1a(20) =0a(21) =4a(22) =0a(23) =-3a(24) =1a(25) =2a(26) =-1a(27) =0a(28) =-2a(29) =1