A017260 a(n) = (9*n + 8)^4.

4096, 83521, 456976, 1500625, 3748096, 7890481, 14776336, 25411681, 40960000, 62742241, 92236816, 131079601, 181063936, 244140625, 322417936, 418161601, 533794816, 671898241, 835210000, 1026625681

Offset

0,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (5, -10, 10, -5, 1).

Formula

G.f.: -(4096 + 63041*x + 80331*x^2 + 9995*x^3 + x^4)/(x-1)^5. - R. J. Mathar, Mar 20 2018

Mathematica

(9*Range[0, 20]+8)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {4096, 83521, 456976, 1500625, 3748096}, 20] (* Harvey P. Dale, Jun 07 2018 *)

Prog

(Magma) [(9*n+8)^4: n in [0..30]]; // Vincenzo Librandi, Jul 28 2011

Crossrefs

Sequence in context: A218527 A017068 A221489 * A027859 A017368 A016782

Adjacent sequences: A017257 A017258 A017259 * A017261 A017262 A017263

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved