Character of extremal vertex operator algebra of rank 13.

Terms

a(0) =1a(1) =0a(2) =273a(3) =2600a(4) =15574a(5) =74152a(6) =298727a(7) =1063296a(8) =3446976a(9) =10372648a(10) =29339830a(11) =78743704a(12) =202029217a(13) =498419352a(14) =1187801472a(15) =2744629160a(16) =6168518954a(17) =13520236184a(18) =28964224276a(19) =60763815944a(20) =125042509293a(21) =252773942408a(22) =502601223072a(23) =984061445952