a(1) = 2 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).

A075596

a(1) = 2 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).

Terms

    a(0) =2a(1) =127a(2) =11273a(3) =1112731a(4) =411127319a(5) =34111273199

External references