Expansion of (theta_3(z)*theta_3(4z)+theta_2(z)*theta_2(4z))^3.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =6a(5) =12a(6) =0a(7) =0a(8) =12a(9) =48a(10) =48a(11) =0a(12) =8a(13) =60a(14) =96a(15) =64a(16) =12a(17) =48a(18) =96a(19) =0a(20) =60a(21) =144a(22) =192a(23) =192a(24) =96a(25) =288a(26) =240a(27) =0a(28) =48a(29) =300