Theta series of A_16 lattice.

Terms

a(0) =1a(1) =272a(2) =14280a(3) =251600a(4) =1949492a(5) =9042096a(6) =32840192a(7) =96028240a(8) =246020430a(9) =556903136a(10) =1173257720a(11) =2268991632a(12) =4204829640a(13) =7307863440a(14) =12370365384a(15) =19885846288a(16) =31507387716a(17) =47786714400a(18) =71820200560a(19) =104094445696a(20) =150234515208a(21) =209639335200a(22) =292733828320a(23) =396519251280