2,1

By Fermat's little theorem if k exists then k <= n (with equality only if n prime). All terms that are 0 are not squarefree and not prime powers. - Larry Reeves

Table of n, a(n) for n=2..82.

Sequence in context: A117531 A275940 A105555 * A333496 A152864 A152984

Adjacent sequences: A066855 A066856 A066857 * A066859 A066860 A066861

nonn

Roger CuculiÃ¨re, Jan 22 2002

More terms from Larry Reeves (larryr(AT)acm.org), Jun 11 2002

approved