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

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =3a(6) =8a(7) =16a(8) =36a(9) =76a(10) =164a(11) =348a(12) =740a(13) =1564a(14) =3300a(15) =6940a(16) =14564a(17) =30492a(18) =63716a(19) =132892a(20) =276708a(21) =575260a(22) =1194212a(23) =2475804a(24) =5126372a(25) =10602268a(26) =21903588a(27) =45205276a(28) =93206756a(29) =192005916