Expansion of theta_3(z)*theta_3(2z) + theta_2(z)*theta_2(2z) in powers of q^(1/4).

Terms

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