a(n) = smallest k such that A366475(k) >= n, or -1 if no such k exists.

A366477

a(n) = smallest k such that A366475(k) >= n, or -1 if no such k exists.

Terms

    a(0) =2a(1) =3a(2) =29a(3) =28025a(4) =2467754261

External references