Expansion of phi(q^4) / phi(-q) in powers of q where phi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =28a(6) =48a(7) =80a(8) =128a(9) =202a(10) =312a(11) =472a(12) =704a(13) =1036a(14) =1504a(15) =2160a(16) =3072a(17) =4324a(18) =6036a(19) =8360a(20) =11488a(21) =15680a(22) =21264a(23) =28656a(24) =38400a(25) =51182a(26) =67864a(27) =89552a(28) =117632a(29) =153836