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

Terms

a(0) =1a(1) =4a(2) =7a(3) =18a(4) =41a(5) =100a(6) =239a(7) =578a(8) =1393a(9) =3364a(10) =8119a(11) =19602a(12) =47321a(13) =114244a(14) =275807a(15) =665858a(16) =1607521a(17) =3880900a(18) =9369319a(19) =22619538a(20) =54608393a(21) =131836324a(22) =318281039a(23) =768398402a(24) =1855077841a(25) =4478554084a(26) =10812186007a(27) =26102926098a(28) =63018038201