Expansion of 1/theta_4(q)^2 in powers of q.

Terms

a(0) =1a(1) =4a(2) =12a(3) =32a(4) =76a(5) =168a(6) =352a(7) =704a(8) =1356a(9) =2532a(10) =4600a(11) =8160a(12) =14176a(13) =24168a(14) =40512a(15) =66880a(16) =108876a(17) =174984a(18) =277932a(19) =436640a(20) =679032a(21) =1046016a(22) =1597088a(23) =2418240a(24) =3632992a(25) =5417708a(26) =8022840a(27) =11802176a(28) =17252928a(29) =25070568