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A034682 Sum of eighth powers of unitary divisors. 1
1, 257, 6562, 65537, 390626, 1686434, 5764802, 16777217, 43046722, 100390882, 214358882, 430053794, 815730722, 1481554114, 2563287812, 4294967297, 6975757442, 11063007554, 16983563042, 25600456162, 37828630724 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..21.

FORMULA

Dirichlet g.f. zeta(s)*zeta(s-8)/zeta(2s-8). - R. J. Mathar, Apr 12 2011

CROSSREFS

Cf. A034444, A034448.

Sequence in context: A209533 A125648 A155468 * A017679 A013956 A036086

Adjacent sequences:  A034679 A034680 A034681 * A034683 A034684 A034685

KEYWORD

nonn,mult

AUTHOR

Erich Friedman

STATUS

approved

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Last modified August 27 17:19 EDT 2015. Contains 261095 sequences.