Average theta series of odd unimodular lattices in dimension 12.

Terms

a(0) =1a(1) =8a(2) =248a(3) =1952a(4) =7928a(5) =25008a(6) =60512a(7) =134464a(8) =253688a(9) =474344a(10) =775248a(11) =1288416a(12) =1934432a(13) =2970352a(14) =4168384a(15) =6101952a(16) =8118008a(17) =11358864a(18) =14704664a(19) =19808800a(20) =24782928a(21) =32809216a(22) =39940896a(23) =51490752a(24) =61899872a(25) =78150008a(26) =92080912