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1,3

a(p) = p-1 for prime p.

This sequence first differs from A059975(n) at n=16, because 3^3.5.7 is less than 3.5.7.11. - Hugo van der Sanden, May 21 2010

Table of n, a(n) for n=1..82.

a(n) = Omega(A038547(n)), where Omega(n) = A001222(n).

Cf. A001222, A038547, A122376, A059975.

Sequence in context: A156864 A059975 A087656 * A089173 A126090 A058266

Adjacent sequences: A122808 A122809 A122810 * A122812 A122813 A122814

nonn

Ray Chandler, Sep 22 2006

approved