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A321547 a(n) = Sum_{d|n} (-1)^(d-1)*d^8. 2
1, -255, 6562, -65791, 390626, -1673310, 5764802, -16843007, 43053283, -99609630, 214358882, -431720542, 815730722, -1470024510, 2563287812, -4311810303, 6975757442, -10978587165, 16983563042, -25699675166, 37828630724, -54661514910, 78310985282, -110523811934, 152588281251, -208011334110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..10000

J. W. L. Glaisher, On the representations of a number as the sum of two, four, six, eight, ten, and twelve squares, Quart. J. Math. 38 (1907), 1-62 (see p. 4 and p. 8).

Index entries for sequences mentioned by Glaisher

FORMULA

G.f.: Sum_{k>=1} (-1)^(k-1)*k^8*x^k/(1 - x^k). - Ilya Gutkovskiy, Dec 23 2018

PROG

(PARI) apply( a(n)=sumdiv(n, d, (-1)^(d-1)*d^8), [1..30]) \\ M. F. Hasler, Nov 26 2018

CROSSREFS

Cf. A321543 - A321565, A321807 - A321836 for similar sequences.

Sequence in context: A024006 A258809 A321553 * A221970 A177897 A160913

Adjacent sequences:  A321544 A321545 A321546 * A321548 A321549 A321550

KEYWORD

sign,mult

AUTHOR

N. J. A. Sloane, Nov 23 2018

STATUS

approved

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)