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A199413 9*6^n+1. 1
10, 55, 325, 1945, 11665, 69985, 419905, 2519425, 15116545, 90699265, 544195585, 3265173505, 19591041025, 117546246145, 705277476865, 4231664861185, 25389989167105, 152339935002625, 914039610015745, 5484237660094465, 32905425960566785 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (7,-6).

FORMULA

a(n) = 6*a(n-1)-5.

a(n) = 7*a(n-1)-6*a(n-2).

G.f.: 5*(2-3*x)/((1-x)*(1-6*x)).

MATHEMATICA

NestList[6#-5&, 10, 20] (* or *) LinearRecurrence[{7, -6}, {10, 55}, 30] (* Harvey P. Dale, Sep 28 2012 *)

PROG

(MAGMA) [9*6^n+1: n in [0..30]];

CROSSREFS

Sequence in context: A253002 A316109 A188168 * A054629 A290359 A030114

Adjacent sequences:  A199410 A199411 A199412 * A199414 A199415 A199416

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 06 2011

STATUS

approved

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Last modified October 16 07:30 EDT 2019. Contains 328051 sequences. (Running on oeis4.)