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Search: id:A153819
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| A153819 |
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Linear recurrence with a(n) = 3a(n-1) - a(n-2) + 2 = 4a(n-1) - 4a(n-2) + a(n-3). Full sequence for A153466. |
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+0
4
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| 16, 34, 88, 232, 610, 1600, 4192, 10978, 28744, 75256, 197026, 515824, 1350448, 3535522, 9256120, 24232840, 63442402, 166094368, 434840704, 1138427746, 2980442536, 7802899864, 20428257058, 53481871312, 140017356880, 366570199330
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(n) mod 9 = 7.
A two-way infinite sequence with a(-n) = a(n-1).
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FORMULA
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G.f.: 2*(8-15*x+8*x^2)/((1-x)*(1-3*x+x^2)) [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Aug 30 2009]
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CROSSREFS
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Sequence in context: A132370 A091216 A132760 this_sequence A070589 A104910 A161441
Adjacent sequences: A153816 A153817 A153818 this_sequence A153820 A153821 A153822
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KEYWORD
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nonn,easy
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Jan 02 2009
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EXTENSIONS
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Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Oct 05 2009
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