Expansion of (theta_3(z)*theta_3(15z) + theta_2(z)*theta_2(15z))^4.

Terms

a(0) =1a(1) =8a(2) =24a(3) =32a(4) =40a(5) =144a(6) =304a(7) =288a(8) =408a(9) =1000a(10) =1216a(11) =1344a(12) =2368a(13) =2384a(14) =2976a(15) =5288a(16) =4264a(17) =4656a(18) =8504a(19) =5792a(20) =10032a(21) =11232a(22) =11072a(23) =10176a(24) =20016a(25) =17624a(26) =19056a(27) =25280a(28) =23904a(29) =23184