Product t2(q^d); d | 15, where t2 = theta2(q)/(2*q^(1/4)).

Terms

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