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A199029 9*11^n-1. 1
8, 98, 1088, 11978, 131768, 1449458, 15944048, 175384538, 1929229928, 21221529218, 233436821408, 2567805035498, 28245855390488, 310704409295378, 3417748502249168, 37595233524740858, 413547568772149448, 4549023256493643938 (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.: 2*(4+x)/((1-x)*(1-11*x)).  a(n) = 2*A199028(n).  - Bruno Berselli, Nov 03 2011

PROG

(MAGMA) [9*11^n-1: n in [0..20]];

CROSSREFS

Sequence in context: A290242 A116229 A099150 * A228329 A228794 A211869

Adjacent sequences:  A199026 A199027 A199028 * A199030 A199031 A199032

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 03 2011

STATUS

approved

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Last modified September 28 14:58 EDT 2021. Contains 347716 sequences. (Running on oeis4.)