Product theta3(q^d); d | 15.

Terms

a(0) =1a(1) =2a(2) =0a(3) =2a(4) =6a(5) =2a(6) =4a(7) =4a(8) =4a(9) =14a(10) =0a(11) =0a(12) =14a(13) =4a(14) =4a(15) =2a(16) =10a(17) =12a(18) =12a(19) =16a(20) =6a(21) =28a(22) =8a(23) =12a(24) =48a(25) =2a(26) =8a(27) =38a(28) =20a(29) =12