a(n) = 10*a(n-1) - a(n-2).

Terms

a(0) =1a(1) =2a(2) =19a(3) =188a(4) =1861a(5) =18422a(6) =182359a(7) =1805168a(8) =17869321a(9) =176888042a(10) =1751011099a(11) =17333222948a(12) =171581218381