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A199559 2*9^n+1. 1
3, 19, 163, 1459, 13123, 118099, 1062883, 9565939, 86093443, 774840979, 6973568803, 62762119219, 564859072963, 5083731656659, 45753584909923, 411782264189299, 3706040377703683, 33354363399333139, 300189270593998243 (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 (10,-9).

FORMULA

a(n) = 9*a(n-1)-8.

a(n) = 10*a(n-1)-9*a(n-2).

G.f.: (3-11*x)/((1-x)*(1-9*x)).

PROG

(Magma) [2*9^n+1: n in [0..30]];

CROSSREFS

Sequence in context: A232691 A057719 A289258 * A136474 A337818 A183069

Adjacent sequences:  A199556 A199557 A199558 * A199560 A199561 A199562

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 08 2011

STATUS

approved

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Last modified September 29 14:10 EDT 2022. Contains 357090 sequences. (Running on oeis4.)