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

Terms

a(0) =1a(1) =2a(2) =10a(3) =4a(4) =10a(5) =2a(6) =16a(7) =4a(8) =26a(9) =10a(10) =0a(11) =12a(12) =20a(13) =4a(14) =36a(15) =0a(16) =26a(17) =12a(18) =30a(19) =4a(20) =10a(21) =8a(22) =32a(23) =20a(24) =32a(25) =2a(26) =40a(27) =16a(28) =20a(29) =20