Revert transform of 2*x*(1-x-x^3+x^4+x^6)-x/(1+x).

Terms

a(0) =1a(1) =1a(2) =3a(3) =11a(4) =43a(5) =181a(6) =797a(7) =3623a(8) =16883a(9) =80211a(10) =387069a(11) =1891993a(12) =9348037a(13) =46611111a(14) =234246003a(15) =1185284981a(16) =6033612461a(17) =30877015405a(18) =158761428015a(19) =819773798543