Expansion of Product_{k>=1} (1-x^k)^25.

Terms

a(0) =1a(1) =-25a(2) =275a(3) =-1700a(4) =6050a(5) =-9405a(6) =-15550a(7) =107525a(8) =-182875a(9) =-81675a(10) =756655a(11) =-801550a(12) =-662975a(13) =1220175a(14) =1361350a(15) =-209440a(16) =-9601900a(17) =8608900a(18) =14889050a(19) =-19948500a(20) =-6262465a(21) =-7057550a(22) =38788925a(23) =19716425a(24) =-69119875a(25) =23579969a(26) =-82427400a(27) =98068850a(28) =191984400