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A199759 8*11^n+1. 1
9, 89, 969, 10649, 117129, 1288409, 14172489, 155897369, 1714871049, 18863581529, 207499396809, 2282493364889, 25107427013769, 276181697151449, 3037998668665929, 33417985355325209, 367597838908577289, 4043576227994350169 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
a(n) = 11*a(n-1)-10.
a(n) = 12*a(n-1)-11*a(n-2).
G.f.: (9-19*x)/((1-x)*(1-11*x)).
MATHEMATICA
8*11^Range[0, 20]+1 (* or *) LinearRecurrence[{12, -11}, {9, 89}, 20] (* Harvey P. Dale, Jun 10 2022 *)
PROG
(Magma) [8*11^n+1: n in [0..30]];
CROSSREFS
Sequence in context: A152267 A082147 A095722 * A069573 A101679 A075507
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 10 2011
STATUS
approved

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Last modified July 21 06:08 EDT 2024. Contains 374463 sequences. (Running on oeis4.)