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

Terms

a(0) =1a(1) =-2a(2) =6a(3) =-18a(4) =52a(5) =-152a(6) =444a(7) =-1296a(8) =3784a(9) =-11048a(10) =32256a(11) =-94176a(12) =274960a(13) =-802784a(14) =2343840a(15) =-6843168a(16) =19979584a(17) =-58333184a(18) =170311872a(19) =-497249280a(20) =1451788672a(21) =-4238699648a(22) =12375475200a(23) =-36131927040a(24) =105492203776a(25) =-307999212032a(26) =899246685696