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A054607 a(n) = Sum_{d|8} phi(d)*n^(8/d). 1
0, 8, 288, 6672, 65840, 391320, 1681008, 5767328, 16781472, 43053480, 100010240, 214373808, 430002768, 815759672, 1475827920, 2562941760, 4295033408, 6975841608, 11020066272, 16983694160, 25600160880, 37823054808, 54876108848 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..22.

Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).

FORMULA

G.f.: -8*x*(34*x^6+525*x^5+1971*x^4+1936*x^3+546*x^2+27*x+1) / (x-1)^9. [Colin Barker, Dec 21 2012]

CROSSREFS

Row n=8 of A185651.

Sequence in context: A060859 A187289 A187191 * A254408 A132592 A034977

Adjacent sequences:  A054604 A054605 A054606 * A054608 A054609 A054610

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Apr 16 2000

STATUS

approved

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Last modified October 23 23:08 EDT 2019. Contains 328379 sequences. (Running on oeis4.)