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A351774 a(n) = Sum_{d|n} Sum_{p|n, p prime} d^p. 1
0, 5, 28, 21, 3126, 302, 823544, 85, 757, 103288, 285311670612, 2254, 302875106592254, 106237426, 766272, 341, 827240261886336764178, 7268, 1978419655660313589123980, 3304728, 1801923904, 584603613084598, 20880467999847912034355032910568, 17230, 9768751 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
a(6) = 302; a(6) = Sum_{d|6} Sum_{p|6, p prime} d^p = Sum_{d|6} (d^2 + d^3) = (1^2 + 1^3) + (2^2 + 2^3) + (3^2 + 3^3) + (6^2 + 6^3) = 302.
CROSSREFS
Cf. A351773.
Sequence in context: A016087 A347251 A321236 * A344579 A345263 A218346
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 18 2022
STATUS
approved

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Last modified May 29 18:36 EDT 2024. Contains 372952 sequences. (Running on oeis4.)