A351773 a(n) = Sum_{d|n} Sum_{p|n, p prime} p^d.

0, 6, 30, 22, 3130, 846, 823550, 278, 19713, 9769842, 285311670622, 536480, 302875106592266, 678223912966, 30531930560, 65814, 827240261886336764194, 387703674, 1978419655660313589123998, 95367442459684, 558545874544463320, 81402749387125076980422, 20880467999847912034355032910590

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Example

a(6) = 846; a(6) = Sum_{d|6} Sum_{p|6, p prime} p^d = Sum_{d|6} (2^d + 3^d) = (2^1 + 3^1) + (2^2 + 3^2) + (2^3 + 3^3) + (2^6 + 3^6) = 846.

Crossrefs

Cf. A351774.

Sequence in context: A367665 A309253 A260017 * A123624 A287733 A066197

Adjacent sequences: A351770 A351771 A351772 * A351774 A351775 A351776

Keyword

nonn

Author

Wesley Ivan Hurt, Feb 18 2022

Status

approved