a(n) = 9*a(n-1)-a(n-2); a(0)=2, a(1)=9.

Terms

a(0) =2a(1) =9a(2) =79a(3) =702a(4) =6239a(5) =55449a(6) =492802a(7) =4379769a(8) =38925119a(9) =345946302a(10) =3074591599a(11) =27325378089a(12) =242853811202