Expansion of phi(q^2) / phi(-q) in powers of q where phi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =22a(5) =40a(6) =68a(7) =112a(8) =182a(9) =286a(10) =440a(11) =668a(12) =996a(13) =1464a(14) =2128a(15) =3056a(16) =4342a(17) =6116a(18) =8538a(19) =11820a(20) =16248a(21) =22176a(22) =30068a(23) =40528a(24) =54308a(25) =72378a(26) =95976a(27) =126648a(28) =166352a(29) =217560