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A199030 10*11^n-1. 2
9, 109, 1209, 13309, 146409, 1610509, 17715609, 194871709, 2143588809, 23579476909, 259374246009, 2853116706109, 31384283767209, 345227121439309, 3797498335832409, 41772481694156509, 459497298635721609, 5054470284992937709 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..900

Index entries for linear recurrences with constant coefficients, signature (12,-11).

FORMULA

a(n) = 11*a(n-1)+10.

a(n) = 12*a(n-1)-11*a(n-2).

G.f.: (9+x)/((1-x)*(1-11*x)).  - Bruno Berselli, Nov 03 2011

PROG

(MAGMA) [10*11^n-1: n in [0..20]];

CROSSREFS

Sequence in context: A058421 A267795 A128876 * A288692 A291815 A261502

Adjacent sequences:  A199027 A199028 A199029 * A199031 A199032 A199033

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 03 2011

STATUS

approved

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Last modified August 4 06:02 EDT 2021. Contains 346442 sequences. (Running on oeis4.)