Expansion of Product_{m>=1} (1+m*q^m)^-18.

Terms

a(0) =1a(1) =-18a(2) =135a(3) =-546a(4) =1413a(5) =-3690a(6) =13230a(7) =-40104a(8) =88452a(9) =-211502a(10) =632259a(11) =-1582488a(12) =3336198a(13) =-8004366a(14) =20385711a(15) =-45695742a(16) =98495865a(17) =-224701146a(18) =511583207a(19) =-1115983224a(20) =2374404237a(21) =-5105519238a(22) =11129154192