Theta series of quadratic form with Gram matrix [ 3, 1, 1; 1, 2, 1; 1, 1, 3 ].

Terms

a(0) =1a(1) =0a(2) =2a(3) =8a(4) =2a(5) =0a(6) =6a(7) =8a(8) =6a(9) =0a(10) =4a(11) =8a(12) =12a(13) =0a(14) =4a(15) =24a(16) =2a(17) =0a(18) =14a(19) =8a(20) =0a(21) =0a(22) =8a(23) =16a(24) =18a(25) =0a(26) =4a(27) =32a(28) =12a(29) =0