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A154687
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Period 6: repeat [1, 4, 7, 8, 5, 2].
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2
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1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4, 7, 8, 5, 2, 1, 4
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OFFSET
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0,2
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COMMENTS
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Terms of the simple continued fraction of 1501/(sqrt(5071503)-1043). [Paolo P. Lava, Feb 17 2009]
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LINKS
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FORMULA
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G.f.: (1+3*x+3*x^2+2*x^3) / (1-x+x^3-x^4).
a(n) = a(n-1) - a(n-3) + a(n-4) for n>3.
a(n) = (27 - cos(n*Pi) - 20*cos(n*Pi/3) + 4*sqrt(3)*sin(n*Pi/3))/6. (End)
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MAPLE
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MATHEMATICA
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PadRight[{}, 72, {1, 4, 7, 8, 5, 2}] (* Harvey P. Dale, Nov 12 2011 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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