Revert transform of 2*x*(1-x-x^3-x^5+x^6)-x/(1+x).

Terms

a(0) =1a(1) =1a(2) =3a(3) =11a(4) =45a(5) =197a(6) =901a(7) =4259a(8) =20643a(9) =102035a(10) =512365a(11) =2606421a(12) =13403715a(13) =69568071a(14) =363946211a(15) =1917148173a(16) =10160087333a(17) =54132552109a(18) =289790960735