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A164828
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Generalized Fibonacci numbers.
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0
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1, 1, 11, 120, 122, 1331, 1462, 15960, 17413, 190081, 207503, 2265120, 2472614, 26991251, 29463874
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..15.
Index to sequences with linear recurrences with constant coefficients, signature (0,11,0,11,0,-1).
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FORMULA
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For n odd a(n) = 11a(n-2) + a(n-3), for n even a(n) = 11a(n-1)- a(n-3); with a(1,2) = 1 (For Fibonacci sequence: factor 2 instead of 11).
G.f.: x*(1+x+109*x^3-10*x^4)/((1+x^2)*(1-12*x^2+x^4)). [Colin Barker, Jul 27 2012]
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CROSSREFS
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Cf. A000045, A041059.
Sequence in context: A125468 A163447 A060499 * A060498 A171316 A081122
Adjacent sequences: A164825 A164826 A164827 * A164829 A164830 A164831
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KEYWORD
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nonn,easy
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AUTHOR
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M. Dols (markdols99(AT)yahoo.com), Aug 27 2009
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STATUS
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approved
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