Limit_{n->oo} A055830^n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =33a(5) =137a(6) =633a(7) =3201a(8) =17525a(9) =102997a(10) =645413a(11) =4288331a(12) =30072815a(13) =221718713a(14) =1712856587a(15) =13825131913a(16) =116289771821