Expansion of (theta_3(z)*theta_3(9z)+theta_2(z)*theta_2(9z))^4.

Terms

a(0) =1a(1) =0a(2) =8a(3) =0a(4) =24a(5) =16a(6) =32a(7) =96a(8) =24a(9) =208a(10) =144a(11) =224a(12) =480a(13) =288a(14) =640a(15) =768a(16) =792a(17) =1008a(18) =1360a(19) =1248a(20) =1616a(21) =2304a(22) =1632a(23) =1984a(24) =3680a(25) =2784a(26) =2032a(27) =5056a(28) =4416a(29) =4304