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

Terms

a(0) =1a(1) =-2a(2) =5a(3) =-10a(4) =18a(5) =-32a(6) =55a(7) =-90a(8) =145a(9) =-228a(10) =351a(11) =-532a(12) =795a(13) =-1170a(14) =1703a(15) =-2452a(16) =3494a(17) =-4934a(18) =6910a(19) =-9598a(20) =13238a(21) =-18134a(22) =24680a(23) =-33390a(24) =44921a(25) =-60108a(26) =80029a(27) =-106044a(28) =139875a(29) =-183706