Expansion of chi(-x)^2 * chi(-x^2) in powers of x where chi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =-2a(2) =0a(3) =0a(4) =3a(5) =-2a(6) =0a(7) =0a(8) =4a(9) =-6a(10) =0a(11) =0a(12) =7a(13) =-8a(14) =0a(15) =0a(16) =13a(17) =-14a(18) =0a(19) =0a(20) =19a(21) =-20a(22) =0a(23) =0a(24) =29a(25) =-34a(26) =0a(27) =0a(28) =43a(29) =-46