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A160389
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Decimal expansion of w=2*cos(pi/7).
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2
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1, 8, 0, 1, 9, 3, 7, 7, 3, 5, 8, 0, 4, 8, 3, 8, 2, 5, 2, 4, 7, 2, 2, 0, 4, 6, 3, 9, 0, 1, 4, 8, 9, 0, 1, 0, 2, 3, 3, 1, 8, 3, 8, 3, 2, 4, 2, 6, 3, 7, 1, 4, 3, 0, 0, 1, 0, 7, 1, 2, 4, 8, 4, 6, 3, 9, 8, 8, 6, 4, 8, 4, 0, 8, 5, 5, 8, 7, 9, 9, 3, 1, 0, 0, 2, 7, 2, 2, 9, 0, 9, 4, 3, 7, 0, 2, 4, 8, 3, 0, 6, 3, 6, 6, 2
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Arises in the approximation of 14-fold quasipatterns by 14 Fourier modes.
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,20000
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EXAMPLE
| 1.801937735804838252472204639014890102331838324263714300107124846398864...
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PROG
| (PARI) { default(realprecision, 20080); x=2*cos(Pi/7); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b160389.txt", n, " ", d)); }
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CROSSREFS
| Cf. A039921 Continued fraction.
Sequence in context: A021559 A167176 A195447 * A011104 A062522 A117888
Adjacent sequences: A160386 A160387 A160388 * A160390 A160391 A160392
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KEYWORD
| nonn,cons
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AUTHOR
| Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 31 2009
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