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A024095 a(n) = 8^n - n^7. 2
1, 7, -64, -1675, -12288, -45357, -17792, 1273609, 14680064, 129434759, 1063741824, 8570447421, 68683644928, 549693065371, 4397941097600, 35184201229457, 281474708275200, 2251799403346575, 18014397897261952 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..400

FORMULA

From Chai Wah Wu, Jan 26 2020: (Start)

a(n) = 16*a(n-1) - 92*a(n-2) + 280*a(n-3) - 518*a(n-4) + 616*a(n-5) - 476*a(n-6) + 232*a(n-7) - 65*a(n-8) + 8*a(n-9) for n > 8.

G.f.: (-9*x^8 - 951*x^7 - 9436*x^6 - 18081*x^5 - 7182*x^4 + 287*x^3 + 84*x^2 + 9*x - 1)/((x - 1)^8*(8*x - 1)). (End)

PROG

(MAGMA) [8^n-n^7: n in [0..20]]; // Vincenzo Librandi, Jul 05 2011

CROSSREFS

Sequence in context: A197785 A252654 A197787 * A274823 A174508 A253802

Adjacent sequences:  A024092 A024093 A024094 * A024096 A024097 A024098

KEYWORD

sign,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified May 18 14:00 EDT 2021. Contains 343995 sequences. (Running on oeis4.)