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

A028997

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

Terms

    a(0) =1a(1) =0a(2) =8a(3) =8a(4) =16a(5) =8a(6) =24a(7) =0a(8) =40a(9) =16a(10) =40a(11) =16a(12) =72a(13) =24a(14) =8a(15) =32a(16) =80a(17) =16a(18) =88a(19) =24a(20) =104a(21) =8a(22) =80a(23) =32a(24) =152a(25) =48a(26) =88a(27) =48a(28) =16a(29) =48

External references