Expansion of chi(-q) / chi(-q^7) in powers of q where chi() is a Ramanujan theta function.

Terms

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