Theta series of D_19 lattice.

Terms

a(0) =1a(1) =684a(2) =62054a(3) =1759704a(4) =21210156a(5) =140116184a(6) =658369608a(7) =2449182384a(8) =7597766246a(9) =20748447108a(10) =50601708504a(11) =114223115480a(12) =238352317656a(13) =472600643976a(14) =883678139136