Theta series of direct sum of 5 copies of hexagonal lattice.

Terms

a(0) =1a(1) =30a(2) =360a(3) =2190a(4) =7230a(5) =14976a(6) =32760a(7) =72060a(8) =92520a(9) =177150a(10) =280800a(11) =351360a(12) =527790a(13) =856860a(14) =864720a(15) =1362816a(16) =1850430a(17) =2004480a(18) =2657160a(19) =3909660a(20) =3609216a(21) =5260380a(22) =6588000a(23) =6716160a(24) =8419320