Expansion of Product_{m >= 1} (1-m*q^m)^15.

Terms

a(0) =1a(1) =-15a(2) =75a(3) =-50a(4) =-750a(5) =1797a(6) =2220a(7) =-6975a(8) =-13980a(9) =6220a(10) =125682a(11) =-8910a(12) =-387885a(13) =-365160a(14) =62130a(15) =3177433a(16) =2777445a(17) =-3799695a(18) =-17320915a(19) =-28897950a(20) =39859074a(21) =105240645a(22) =131649465a(23) =-50100225a(24) =-602800010a(25) =-882445182