Numbers n such that 8*9^n - 1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =25a(5) =85a(6) =92a(7) =97a(8) =649a(9) =2017a(10) =2978a(11) =3577a(12) =4985a(13) =17978a(14) =21365a(15) =66002a(16) =95305a(17) =142199