a(1) = 2; for n>=1, a(n+1) is the smallest palindromic prime with a(n) as a central substring.

A053600

a(1) = 2; for n>=1, a(n+1) is the smallest palindromic prime with a(n) as a central substring.

Terms

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

External references