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

Terms

a(0) =1a(1) =-2a(2) =4a(3) =-10a(4) =22a(5) =-50a(6) =114a(7) =-258a(8) =586a(9) =-1330a(10) =3018a(11) =-6850a(12) =15546a(13) =-35282a(14) =80074a(15) =-181730a(16) =412442a(17) =-936050a(18) =2124394a(19) =-4821378a(20) =10942266a(21) =-24833810a(22) =56361098a(23) =-127913250a(24) =290303066a(25) =-658851762a(26) =1495284394a(27) =-3393594050a(28) =7701866362a(29) =-17479623250