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A141128 Sum over unitary prime power divisors p^k of n of A025528(p^k). 1
0, 1, 2, 3, 4, 3, 5, 6, 7, 5, 8, 5, 9, 6, 6, 10, 11, 8, 12, 7, 7, 9, 13, 8, 14, 10, 15, 8, 16, 7, 17, 18, 10, 12, 9, 10, 19, 13, 11, 10, 20, 8, 21, 11, 11, 14, 22, 12, 23, 15, 13, 12, 24, 16, 12, 11, 14, 17, 25, 9, 26, 18, 12, 27, 13, 11, 28, 14, 15, 10, 29, 13, 30, 20, 16, 15, 13, 12, 31 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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

LINKS

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

FORMULA

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

CROSSREFS

Cf. A056239, A025528.

Sequence in context: A278056 A324345 A324533 * A160180 A319351 A323373

Adjacent sequences:  A141125 A141126 A141127 * A141129 A141130 A141131

KEYWORD

nonn

AUTHOR

Franklin T. Adams-Watters, Jun 05 2008

STATUS

approved

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Last modified June 18 17:05 EDT 2019. Contains 324214 sequences. (Running on oeis4.)