Theta series of 16-dimensional Barnes-Wall lattice.

Terms

a(0) =1a(1) =0a(2) =4320a(3) =61440a(4) =522720a(5) =2211840a(6) =8960640a(7) =23224320a(8) =67154400a(9) =135168000a(10) =319809600a(11) =550195200a(12) =1147643520a(13) =1771683840a(14) =3371915520a(15) =4826603520a(16) =8593797600a(17) =11585617920a(18) =19590534240a(19) =25239859200a(20) =40979580480a(21) =50877235200