Smallest prime > 9^n.

Terms

a(0) =2a(1) =11a(2) =83a(3) =733a(4) =6563a(5) =59051a(6) =531457a(7) =4782971a(8) =43046747a(9) =387420499a(10) =3486784409a(11) =31381059613a(12) =282429536483