Expansion of x*(1+2*x^2-2*x^3+x^4) / ((x-1)*(x^2-2*x-1)*(x^2-x+1)*(x+1)^2).

Terms

a(0) =0a(1) =1a(2) =-2a(3) =8a(4) =-21a(5) =54a(6) =-134a(7) =329a(8) =-798a(9) =1934a(10) =-4675a(11) =11294a(12) =-27274a(13) =65855a(14) =-158996a(15) =383862a(16) =-926735a(17) =2237348a(18) =-5401448a(19) =13040263a(20) =-31481992a(21) =76004268a(22) =-183490549a(23) =442985388a(24) =-1069461348a(25) =2581908109a(26) =-6233277590a(27) =15048463316a(28) =-36330204249a(29) =87708871842