a(1) = 13 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).
A075601
a(1) = 13 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) =13a(1) =2131a(2) =121313a(3) =51213137a(4) =3512131379a(5) =135121313797
External references
- oeis: A075601