Expansion of (theta_3(z)*theta_3(9z)+theta_2(z)*theta_2(9z))^2.

Terms

a(0) =1a(1) =0a(2) =4a(3) =0a(4) =4a(5) =8a(6) =0a(7) =16a(8) =4a(9) =8a(10) =24a(11) =16a(12) =0a(13) =16a(14) =32a(15) =0a(16) =4a(17) =24a(18) =24a(19) =16a(20) =24a(21) =0a(22) =48a(23) =32a(24) =0a(25) =48a(26) =56a(27) =32a(28) =32a(29) =40