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A132954
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Period 6: repeat [1, 2, 4, -1, -2, -4].
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2
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1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2, 4, -1, -2, -4, 1, 2
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OFFSET
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0,2
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COMMENTS
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Nonsimple continued fraction expansion of (5+sqrt(13))/6 = 1.434258545... - R. J. Mathar, Mar 08 2012
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LINKS
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FORMULA
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a(n) = -a(n-3) for n>2. G.f.: (1+2*x+4*x^2)/((1+x)*(x^2-x+1)). [R. J. Mathar, Apr 13 2010]
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MAPLE
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MATHEMATICA
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PROG
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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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STATUS
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approved
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