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