Expansion of (theta_3(z)*theta_3(2z)+theta_2(z)*theta_2(2z))^3.

Terms

a(0) =1a(1) =0a(2) =0a(3) =12a(4) =6a(5) =0a(6) =48a(7) =48a(8) =18a(9) =64a(10) =96a(11) =108a(12) =44a(13) =0a(14) =192a(15) =240a(16) =90a(17) =192a(18) =384a(19) =396a(20) =144a(21) =0a(22) =432a(23) =528a(24) =212a(25) =384a(26) =672a(27) =792a(28) =288a(29) =0