Revert transform of (-1 + 3x - 2x^2 + x^3)/(2x - 1).

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =88a(6) =368a(7) =1585a(8) =6984a(9) =31348a(10) =142868a(11) =659434a(12) =3076432a(13) =14483556a(14) =68723800a(15) =328322903a(16) =1577959294a(17) =7624155960a(18) =37011662868a(19) =180436535308a(20) =883016392536