a(1) = 5, a(n+1) is the concatenation of a(n) and the next prime after a(n).

A068003

a(1) = 5, a(n+1) is the concatenation of a(n) and the next prime after a(n).

Terms

    a(0) =5a(1) =57a(2) =5759a(3) =57595779

External references