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

Terms

a(0) =0a(1) =1a(2) =2a(3) =6a(4) =16a(5) =38a(6) =92a(7) =222a(8) =536a(9) =1294a(10) =3124a(11) =7542a(12) =18208a(13) =43958a(14) =106124a(15) =256206a(16) =618536a(17) =1493278a(18) =3605092a(19) =8703462a(20) =21012016a(21) =50727494a(22) =122467004a(23) =295661502a(24) =713790008a(25) =1723241518a(26) =4160273044a(27) =10043787606a(28) =24247848256a(29) =58539484118