1,3

Additive with a(p^k) = A025528(p^k).

Table of n, a(n) for n=1..79.

sum_{p^k|n,not p^{k+1}|n,k>0} A025528(p^k).

Cf. A056239, A025528.

Sequence in context: A278056 A324345 A324533 * A160180 A319351 A323373

Adjacent sequences: A141125 A141126 A141127 * A141129 A141130 A141131

nonn

Franklin T. Adams-Watters, Jun 05 2008

approved