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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =-2a(4) =-5a(5) =-12a(6) =-29a(7) =-70a(8) =-169a(9) =-408a(10) =-985a(11) =-2378a(12) =-5741a(13) =-13860a(14) =-33461a(15) =-80782a(16) =-195025a(17) =-470832a(18) =-1136689a(19) =-2744210a(20) =-6625109a(21) =-15994428a(22) =-38613965a(23) =-93222358a(24) =-225058681a(25) =-543339720a(26) =-1311738121a(27) =-3166815962a(28) =-7645370045a(29) =-18457556052