Expansion of g.f. (1+x)^2*(x^2-6*x+1)/(x-1)^4.

Terms

a(0) =1a(1) =0a(2) =-16a(3) =-64a(4) =-160a(5) =-320a(6) =-560a(7) =-896a(8) =-1344a(9) =-1920a(10) =-2640a(11) =-3520a(12) =-4576a(13) =-5824a(14) =-7280a(15) =-8960a(16) =-10880a(17) =-13056a(18) =-15504a(19) =-18240a(20) =-21280a(21) =-24640a(22) =-28336a(23) =-32384a(24) =-36800a(25) =-41600a(26) =-46800a(27) =-52416a(28) =-58464a(29) =-64960