Primes of the form m = 9^i + 9^j - 1, where i > j >= 0.

Terms

a(0) =89a(1) =809a(2) =6569a(3) =65609a(4) =531521a(5) =538001a(6) =590489a(7) =4782977a(8) =4783697a(9) =47829689a(10) =3486784409a(11) =3491567369a(12) =3529831121a(13) =31768480097a(14) =34867844009a(15) =282430067921a(16) =285916320881a(17) =313810596089