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A306079
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Decimal expansion of the fourth smallest known Salem number.
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7
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1, 2, 0, 2, 6, 1, 6, 7, 4, 3, 6, 8, 8, 6, 0, 4, 2, 6, 1, 1, 1, 8, 2, 9, 5, 4, 1, 5, 9, 4, 8, 6, 1, 9, 0, 4, 5, 3, 4, 3, 9, 4, 9, 8, 3, 4, 9, 6, 9, 5, 2, 3, 0, 4, 3, 6, 8, 5, 3, 0, 9, 5, 7, 6, 7, 2, 6, 4, 5, 4, 0, 6, 5, 8, 7, 6, 3, 6, 5, 5, 5, 3, 7, 7, 2, 6, 7, 1, 0, 8, 0, 0, 5, 5, 1, 8, 2, 6, 5, 7, 6, 7
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..102.
M. J. Mossinghoff, Small Salem Numbers
Eric Weisstein's MathWorld, Salem Constants.
Wikipedia, Salem number
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EXAMPLE
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1.20261674368860426111829541594861904534394983496952304368530957672645...
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MATHEMATICA
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c1 = {1, 0, -1, 0, 0, 0, 0, -1};
c2 = Join[c1, Reverse[Most[c1]]];
p = (x^Range[0, Length[c2]-1]).c2;
sigma4 = Root[p, x, 2];
RealDigits[sigma4, 10, 102][[1]]
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CROSSREFS
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Cf. A073011 (sigma1), A219300 (sigma2), A306078 (sigma3).
Sequence in context: A208385 A186634 A139213 * A242860 A320239 A033727
Adjacent sequences: A306076 A306077 A306078 * A306080 A306081 A306082
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KEYWORD
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nonn,cons
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AUTHOR
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Jean-François Alcover, Jun 19 2018
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STATUS
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approved
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