Theta series of A_19 lattice.

Terms

a(0) =1a(1) =380a(2) =29070a(3) =782040a(4) =9438440a(5) =62953992a(6) =293878320a(7) =1095681360a(8) =3397527180a(9) =9278730940a(10) =22633815436a(11) =51077966760a(12) =106592778180a(13) =211336265080a(14) =395232580440a(15) =713167271184