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Search: id:A107368
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| A107368 |
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a(n) = a(n-1)+a(n-2)-a(n-3)+a(n-5). |
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+0
1
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| 0, 0, 1, 0, 1, 0, 1, 1, 2, 3, 4, 6, 8, 12, 17, 25, 36, 52, 75, 108, 156, 225, 325, 469, 677, 977, 1410, 2035, 2937, 4239, 6118, 8830, 12744, 18393, 26546, 38313, 55296, 79807, 115183, 166240, 239929, 346282, 499778, 721314, 1041050, 1502515, 2168533
(list; graph; listen)
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OFFSET
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0,9
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COMMENT
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First differences of A107293. [Sep 28 2009]
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FORMULA
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G.f.: x^2*(-1+x)/(-1+x+x^2-x^3+x^5). [Sep 28 2009]
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MATHEMATICA
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M = {{0, 1, 0, 0, 0}, {0, 0, 1, 0, 0}, {0, 0, 0, 1, 0}, {0, 0, 0, 0, 1}, {1, 0, -1, 1, 1}} fourss = Table[Abs[MatrixPower[M, i][[1, 4]]], {i, 1, 50}]
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CROSSREFS
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Sequence in context: A068927 A018261 A018438 this_sequence A074733 A001461 A048597
Adjacent sequences: A107365 A107366 A107367 this_sequence A107369 A107370 A107371
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KEYWORD
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nonn,easy
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jun 08 2005
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EXTENSIONS
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Definition replaced by recurrence by the Associate Editors of the OEIS, Sep 28 2009
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