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

Author

N. J. A. Sloane

Keywords

• nonn
• easy

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)

Crossrefs

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

Programs

Magma

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

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 *)

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