Expansion of Product_{k >= 1} (1-x^k)^48.

Terms

a(0) =1a(1) =-48a(2) =1080a(3) =-15040a(4) =143820a(5) =-985824a(6) =4857920a(7) =-16295040a(8) =28412910a(9) =38671600a(10) =-424520544a(11) =1268350272a(12) =-1211937160a(13) =-4306546080a(14) =18293091840a(15) =-23522231424a(16) =-26299018683a(17) =137218594320a(18) =-150999182320a(19) =-134713340160