Theta series of A_15 lattice.

Terms

a(0) =1a(1) =240a(2) =10920a(3) =163520a(4) =1075860a(5) =4464096a(6) =14909440a(7) =40080000a(8) =96643950a(9) =204728400a(10) =412819680a(11) =754303680a(12) =1350075720a(13) =2236728480a(14) =3673313280a(15) =5666507392a(16) =8760753540a(17) =12779981760a(18) =18827053960a(19) =26351976000a(20) =37332319752a(21) =50483661760a(22) =69411962880a(23) =91160284800a(24) =122167955000