Theta series of cubic lattice with respect to edge.

Terms

a(0) =2a(1) =8a(2) =10a(3) =8a(4) =16a(5) =16a(6) =10a(7) =24a(8) =16a(9) =8a(10) =32a(11) =24a(12) =18a(13) =24a(14) =16a(15) =24a(16) =32a(17) =32a(18) =16a(19) =32a(20) =34a(21) =16a(22) =48a(23) =16a(24) =16a(25) =56a(26) =32a(27) =24a(28) =32a(29) =40