Starting with a(0)=5, a(n) = smallest squarefree number k such that, for all a(m) with m<n, k+a(m) is not squarefree.

A080797

Starting with a(0)=5, a(n) = smallest squarefree number k such that, for all a(m) with m<n, k+a(m) is not squarefree.