A017235 a(n) = (9*n + 6)^3.

216, 3375, 13824, 35937, 74088, 132651, 216000, 328509, 474552, 658503, 884736, 1157625, 1481544, 1860867, 2299968, 2803221, 3375000, 4019679, 4741632, 5545233, 6434856, 7414875, 8489664

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.: 27*(8 + 93*x + 60*x^2 + x^3)/(x-1)^4. - R. J. Mathar, Mar 20 2018

Mathematica

(9*Range[0, 30]+6)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {216, 3375, 13824, 35937}, 30] (* Harvey P. Dale, Feb 14 2018 *)

Prog

(Magma) [(9*n+6)^3: n in [0..35]]; // Vincenzo Librandi, Jul 25 2011

Crossrefs

Cf. A000578 (n^3), A017233 (9*n+6).

Sequence in context: A251359 A251352 A027364 * A152241 A183785 A282019

Adjacent sequences: A017232 A017233 A017234 * A017236 A017237 A017238

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved