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A072977
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Increasing partial quotients of w=2*cos(Pi/7).
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0
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1, 4, 20, 39, 94, 636, 699, 716, 904, 1374, 1824, 2457, 24007, 32164, 170306, 179545, 198107, 463343, 579913, 910774, 3758763, 3896343, 5800335, 11314629, 13245450, 14422622, 62449915
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OFFSET
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1,2
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COMMENTS
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w satisfies w3 - w2 - 2w + 1 = 0 and so is algebraic.
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LINKS
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Table of n, a(n) for n=1..27.
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EXAMPLE
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w = 1.801937735804838252472204639014890102331838324263714300...
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MATHEMATICA
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a = ContinuedFraction[2*Cos[Pi/7], 10^6]; b = 0; Do[ If[a[[n]] > b, b = a[[n]]; Print[b]], {n, 1, 10^6 - 1}]
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CROSSREFS
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Continued fraction: A039921.
Sequence in context: A044446 A232221 A323183 * A341895 A163365 A145194
Adjacent sequences: A072974 A072975 A072976 * A072978 A072979 A072980
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KEYWORD
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cofr,nonn
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AUTHOR
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Alastair Rucklidge (A.M.Rucklidge(AT)leeds.ac.uk) and Robert G. Wilson v, Aug 13 2002
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EXTENSIONS
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a(22)-a(27) from Robert G. Wilson v, Jun 12 2013.
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STATUS
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approved
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