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A017121 a(n) = (8*n + 4)^9. 1
262144, 5159780352, 512000000000, 10578455953408, 101559956668416, 618121839509504, 2779905883635712, 10077696000000000, 31087100296429568, 84590643846578176, 208215748530929664, 472161363286556672 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Index entries for linear recurrences with constant coefficients, signature (10,-45,120,-210,252,-210,120,-45,10,-1).

FORMULA

G.f.: 262144*(1+x)*(x^8 + 19672*x^7 + 1736668*x^6 + 19971304*x^5 + 49441990*x^4 + 19971304*x^3 + 1736668*x^2 + 19672*x + 1) / (x-1)^10 . - R. J. Mathar, May 08 2015

PROG

(MAGMA) [(8*n+4)^9: n in [0..15] ]; // Vincenzo Librandi, Jul 21 2011

CROSSREFS

Sequence in context: A183818 A016965 A017037 * A017217 A017325 A017445

Adjacent sequences:  A017118 A017119 A017120 * A017122 A017123 A017124

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified July 2 04:47 EDT 2022. Contains 354985 sequences. (Running on oeis4.)