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A014913 a(1)=1, a(n) = 24*a(n-1) + n. 2
1, 26, 627, 15052, 361253, 8670078, 208081879, 4993965104, 119855162505, 2876523900130, 69036573603131, 1656877766475156, 39765066395403757, 954361593489690182, 22904678243752564383, 549712277850061545208 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..200

Index entries for linear recurrences with constant coefficients, signature (26, -49, 24).

FORMULA

a(n) = -24/529 - (1/23)*n + (24/529)*24^n, with n >= 1. - Paolo P. Lava, Jan 14 2009

a(1)=1, a(2)=26, a(3)=627, a(n) = 26*a(n-1) - 49*a(n-2) + 24*a(n-3). - Vincenzo Librandi, Oct 19 2012

MATHEMATICA

LinearRecurrence[{26, -49, 24}, {1, 26, 627}, 20] (* Vincenzo Librandi, Oct 19 2012 *)

PROG

(MAGMA) I:=[1, 26, 627]; [n le 3 select I[n] else 26*Self(n-1) - 49*Self(n-2) + 24*Self(n-3): n in [1..20]]; // Vincenzo Librandi, Oct 19 2012

CROSSREFS

Sequence in context: A057010 A217636 A249863 * A285397 A106793 A162812

Adjacent sequences:  A014910 A014911 A014912 * A014914 A014915 A014916

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Olivier Gérard

STATUS

approved

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Last modified October 15 15:03 EDT 2019. Contains 328030 sequences. (Running on oeis4.)