a(1) = 19; thereafter a(n) = the smallest prime of the form d0...0a(n-1), where d is a single digit, or 0 if no such prime exists.

A077716

a(1) = 19; thereafter a(n) = the smallest prime of the form d0...0a(n-1), where d is a single digit, or 0 if no such prime exists.

Terms

    a(0) =19a(1) =419a(2) =5419a(3) =35419a(4) =435419a(5) =80435419

External references