Theta series of A_7 lattice.

Terms

a(0) =1a(1) =56a(2) =420a(3) =896a(4) =2366a(5) =3360a(6) =6440a(7) =7168a(8) =14196a(9) =14168a(10) =22120a(11) =24192a(12) =37912a(13) =33824a(14) =55440a(15) =50176a(16) =75838a(17) =71232a(18) =98700a(19) =88704a(20) =141960a(21) =117824a(22) =156520a(23) =150528a(24) =217672a(25) =173656a(26) =261240a(27) =218624a(28) =303424a(29) =273504