Expansion of phi(-x) / f(-x^4)^2 in powers of x where phi(), f() are Ramanujan theta functions.

Terms

a(0) =1a(1) =-2a(2) =0a(3) =0a(4) =4a(5) =-4a(6) =0a(7) =0a(8) =9a(9) =-12a(10) =0a(11) =0a(12) =20a(13) =-24a(14) =0a(15) =0a(16) =42a(17) =-50a(18) =0a(19) =0a(20) =80a(21) =-92a(22) =0a(23) =0a(24) =147a(25) =-172a(26) =0a(27) =0a(28) =260a(29) =-296