A017031 a(n) = (7*n + 4)^3.

64, 1331, 5832, 15625, 32768, 59319, 97336, 148877, 216000, 300763, 405224, 531441, 681472, 857375, 1061208, 1295029, 1560896, 1860867, 2197000, 2571353, 2985984, 3442951, 3944312, 4492125, 5088448

Offset

0,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).

Formula

G.f.: (64 + 1075*x + 892*x^2 + 27*x^3)/(x-1)^4. - R. J. Mathar, Jul 07 2017

Mathematica

(7Range[0, 30]+4)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {64, 1331, 5832, 15625}, 30] (* Harvey P. Dale, Jun 01 2021 *)

Prog

(Magma) [(7*n+4)^3: n in [0..40] ]; // Vincenzo Librandi, Jul 16 2011

Crossrefs

Sequence in context: A240788 A240294 A226086 * A333812 A283812 A264086

Adjacent sequences: A017028 A017029 A017030 * A017032 A017033 A017034

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved