Beginning with 2, a(n+1) is the smallest palindromic prime obtained by placing identical digits on both sides of a(n).

A090275

Beginning with 2, a(n+1) is the smallest palindromic prime obtained by placing identical digits on both sides of a(n).

Terms

    a(0) =2a(1) =727a(2) =37273a(3) =333727333a(4) =93337273339

External references