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3, 28, 303, 3328, 36603, 402628, 4428903, 48717928, 535897203, 5894869228, 64843561503, 713279176528, 7846070941803, 86306780359828, 949374583958103, 10443120423539128, 114874324658930403, 1263617571248234428
(list;
graph;
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)-5.
a(n) = 12*a(n-1)-11*a(n-2).
G.f.: (3-8*x)/((1-x)*(1-11*x)).
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MATHEMATICA
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(5 11^Range[0, 20]+1)/2 (* or *) LinearRecurrence[{12, -11}, {3, 28}, 20] (* Harvey P. Dale, Apr 12 2022 *)
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PROG
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(Magma) [(5*11^n+1)/2: n in [0..30]];
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CROSSREFS
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Sequence in context: A239297 A287884 A250890 * A277507 A176335 A072343
Adjacent sequences: A199751 A199752 A199753 * A199755 A199756 A199757
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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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