a(n) = 11^n - 2.

Terms

a(0) =9a(1) =119a(2) =1329a(3) =14639a(4) =161049a(5) =1771559a(6) =19487169a(7) =214358879a(8) =2357947689a(9) =25937424599a(10) =285311670609