Theta series of quadratic form with Gram matrix [ 2, 1, 0; 1, 2, 1; 0, 1, 4 ].

Terms

a(0) =1a(1) =6a(2) =6a(3) =12a(4) =18a(5) =0a(6) =12a(7) =24a(8) =18a(9) =18a(10) =6a(11) =24a(12) =24a(13) =24a(14) =12a(15) =8a(16) =42a(17) =12a(18) =30a(19) =48a(20) =0a(21) =24a(22) =36a(23) =24a(24) =36a(25) =6a(26) =12a(27) =48a(28) =60a(29) =24