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A174737
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a(n) = a(n-1) - a(n-2), with a(0)=2, a(1)=-1.
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2
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2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2, 1, 3, 2, -1, -3, -2
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OFFSET
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0,1
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REFERENCES
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Rosen, Discrete Mathematics and its Applications, McGraw-Hill, 2007, p. 456, Question 1b.
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LINKS
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FORMULA
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MAPLE
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a[0] := 2: a[1] := -1: for n from 2 to 80 do a[n] := a[n-1]-a[n-2] end do: seq(a[n], n = 0 .. 75); # Emeric Deutsch, Apr 05 2010
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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Zachary Berger (zsb1244(AT)rit.edu), Mar 28 2010
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EXTENSIONS
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STATUS
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approved
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