Expansion of phi(-q) / phi(q^4) in powers of q where phi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =-2a(2) =0a(3) =0a(4) =0a(5) =4a(6) =0a(7) =0a(8) =0a(9) =-10a(10) =0a(11) =0a(12) =0a(13) =20a(14) =0a(15) =0a(16) =0a(17) =-36a(18) =0a(19) =0a(20) =0a(21) =64a(22) =0a(23) =0a(24) =0a(25) =-110a(26) =0a(27) =0a(28) =0a(29) =180