Numbers n such that (9^n + 1)/10 is a prime.

A057175

Numbers n such that (9^n + 1)/10 is a prime.

Terms

    a(0) =3a(1) =59a(2) =223a(3) =547a(4) =773a(5) =1009a(6) =1823a(7) =3803a(8) =49223a(9) =193247a(10) =703393a(11) =860029

External references