a(1) = 3; 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.

A077713

a(1) = 3; 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) =3a(1) =13a(2) =113a(3) =2113a(4) =12113a(5) =612113a(6) =50612113a(7) =1050612113

External references