A017092 a(n) = (8*n + 2)^4.

16, 10000, 104976, 456976, 1336336, 3111696, 6250000, 11316496, 18974736, 29986576, 45212176, 65610000, 92236816, 126247696, 168896016, 221533456, 285610000, 362673936, 454371856, 562448656

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.: -16*(1 + 620*x + 3446*x^2 + 1996*x^3 + 81*x^4)/(x-1)^5. - R. J. Mathar, Jul 14 2016

Mathematica

(8*Range[0, 20]+2)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {16, 10000, 104976, 456976, 1336336}, 20] (* Harvey P. Dale, Dec 16 2017 *)

Prog

(Magma) [(8*n+2)^4: n in [0..30]]; // Vincenzo Librandi, Jul 12 2011

Crossrefs

Cf. A017089 (8n+2), A000583 (n^4).

Sequence in context: A265240 A221137 A006448 * A265634 A191945 A290770

Adjacent sequences: A017089 A017090 A017091 * A017093 A017094 A017095

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved