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6, 56, 606, 6656, 73206, 805256, 8857806, 97435856, 1071794406, 11789738456, 129687123006, 1426558353056, 15692141883606, 172613560719656, 1898749167916206, 20886240847078256, 229748649317860806, 2527235142496468856
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..900
Index entries for linear recurrences with constant coefficients, signature (12,-11).
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FORMULA
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a(n) = 11*a(n-1)-10.
a(n) = 12*a(n-1)-11*a(n-2).
G.f.: 2*(3-8*x)/((1-x)*(1-11*x)).
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MATHEMATICA
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5*11^Range[0, 20]+1 (* or *) LinearRecurrence[{12, -11}, {6, 56}, 20] (* Harvey P. Dale, May 20 2019 *)
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PROG
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(Magma) [5*11^n+1: n in [0..30]];
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CROSSREFS
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Sequence in context: A099140 A048348 A227384 * A025749 A297705 A231690
Adjacent sequences: A199752 A199753 A199754 * A199756 A199757 A199758
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KEYWORD
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nonn,easy
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AUTHOR
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Vincenzo Librandi, Nov 10 2011
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STATUS
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approved
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