Expansion of Product_{m>=1} (1+q^m)^(-9).

Terms

a(0) =1a(1) =-9a(2) =36a(3) =-93a(4) =207a(5) =-459a(6) =957a(7) =-1827a(8) =3357a(9) =-6061a(10) =10620a(11) =-18045a(12) =30006a(13) =-49122a(14) =79128a(15) =-125247a(16) =195435a(17) =-301599a(18) =460167a(19) =-694026a(20) =1036368a(21) =-1534305a(22) =2252277a(23) =-3278709a(24) =4736973a(25) =-6797196a(26) =9689103a(27) =-13722487