Expansion of phi(q^9) / phi(q) in powers of q where phi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =-2a(2) =4a(3) =-8a(4) =14a(5) =-24a(6) =40a(7) =-64a(8) =100a(9) =-152a(10) =228a(11) =-336a(12) =488a(13) =-700a(14) =992a(15) =-1392a(16) =1934a(17) =-2664a(18) =3640a(19) =-4936a(20) =6648a(21) =-8896a(22) =11832a(23) =-15648a(24) =20584a(25) =-26942a(26) =35096a(27) =-45512a(28) =58768a(29) =-75576