Theta series of {D_9}* lattice.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =18a(5) =0a(6) =0a(7) =0a(8) =144a(9) =512a(10) =0a(11) =0a(12) =672a(13) =0a(14) =0a(15) =0a(16) =2034a(17) =4608a(18) =0a(19) =0a(20) =4320a(21) =0a(22) =0a(23) =0a(24) =7392a(25) =18432a(26) =0a(27) =0a(28) =12672a(29) =0