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

Terms

a(0) =0a(1) =1a(2) =7a(3) =30a(4) =104a(5) =320a(6) =912a(7) =2464a(8) =6400a(9) =16128a(10) =39680a(11) =95744a(12) =227328a(13) =532480a(14) =1232896a(15) =2826240a(16) =6422528a(17) =14483456a(18) =32440320a(19) =72220672a(20) =159907840a(21) =352321536a(22) =772800512a(23) =1688207360a(24) =3674210304a(25) =7969177600a(26) =17230200832a(27) =37144756224a(28) =79859548160a(29) =171261820928