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A024065 a(n) = 6^n - n^3. 2
1, 5, 28, 189, 1232, 7651, 46440, 279593, 1679104, 10076967, 60465176, 362795725, 2176780608, 13060691819, 78364161352, 470184981201, 2821109903360, 16926659439823, 101559956662584, 609359740003637 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..500

Index entries for linear recurrences with constant coefficients, signature (10,-30,40,-25,6).

FORMULA

G.f.: (-1 - 7*x^4 - 19*x^3 - 8*x^2 + 5*x)/((6*x-1)*(x-1)^4). - Maksym Voznyy (voznyy(AT)mail.ru), Jul 26 2009

MATHEMATICA

Table[6^n-n^3, {n, 0, 20}] (* Harvey P. Dale, Jun 15 2019 *)

PROG

(MAGMA) [6^n-n^3: n in [0..25]]; // Vincenzo Librandi, Jul 03 2011

CROSSREFS

Sequence in context: A123776 A070779 A189487 * A003467 A240770 A318364

Adjacent sequences:  A024062 A024063 A024064 * A024066 A024067 A024068

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 4 10:11 EDT 2021. Contains 346447 sequences. (Running on oeis4.)