The (10^n)-th odd-digit number.

A075879

The (10^n)-th odd-digit number.

Terms

    a(0) =1a(1) =19a(2) =579a(3) =13779a(4) =397779a(5) =11177779a(6) =335777779a(7) =7937777779a(8) =179977777779

External references