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A199764 10*11^n+1. 2
11, 111, 1211, 13311, 146411, 1610511, 17715611, 194871711, 2143588811, 23579476911, 259374246011, 2853116706111, 31384283767211, 345227121439311, 3797498335832411, 41772481694156511, 459497298635721611, 5054470284992937711 (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.: (11-21*x)/((1-x)*(1-11*x)).
MATHEMATICA
NestList[11#-10&, 11, 20] (* or *) LinearRecurrence[{12, -11}, {11, 111}, 20] (* Harvey P. Dale, Aug 28 2021 *)
PROG
(Magma) [10*11^n+1: n in [0..20]];
CROSSREFS
Sequence in context: A343355 A240367 A338679 * A097177 A136982 A083441
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 10 2011
STATUS
approved

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Last modified June 21 12:41 EDT 2024. Contains 373544 sequences. (Running on oeis4.)