a(n+1) is the largest prime formed by appending a single digit to a(n); a(1)=18.

A160955

a(n+1) is the largest prime formed by appending a single digit to a(n); a(1)=18.

Terms

    a(0) =18a(1) =181a(2) =1811a(3) =18119a(4) =181199a(5) =1811993

External references