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A160155 Decimal expansion of the one real root of x^5-x-1. 8
1, 1, 6, 7, 3, 0, 3, 9, 7, 8, 2, 6, 1, 4, 1, 8, 6, 8, 4, 2, 5, 6, 0, 4, 5, 8, 9, 9, 8, 5, 4, 8, 4, 2, 1, 8, 0, 7, 2, 0, 5, 6, 0, 3, 7, 1, 5, 2, 5, 4, 8, 9, 0, 3, 9, 1, 4, 0, 0, 8, 2, 4, 4, 9, 2, 7, 5, 6, 5, 1, 9, 0, 3, 4, 2, 9, 5, 2, 7, 0, 5, 3, 1, 8, 0, 6, 8, 5, 2, 0, 5, 0, 4, 9, 7, 2, 8, 6, 7, 2, 8, 9, 5, 3, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..20000

David W. Boys, The maximal modulus of an algebraic integer, Math. Comp. 45 (1985) 243-249, table page S18.

Qiang Wu, The smallest Perron numbers, Math. Comp. 79 (2010) 2387-2394

EXAMPLE

1.16730397826141868425604589985484218072056037152548903914008244927565...

MATHEMATICA

RealDigits[Root[x^5-x-1, x, 1], 10, 105] // First (* Jean-Fran├žois Alcover, Jul 09 2015 *)

PROG

(PARI) { default(realprecision, 20080); x=NULL; p=x^5 - x - 1; rs=polroots(p); r=real(rs[1]); for (n=1, 20000, d=floor(r); r=(r-d)*10; write("b160155.txt", n, " ", d)); }

(PARI) polrootsreal(x^5-x-1)[1] \\ Charles R Greathouse IV, Apr 14 2014

CROSSREFS

Cf. A039922 Continued fraction.

Sequence in context: A267251 A259526 A108664 * A277135 A153628 A154972

Adjacent sequences:  A160152 A160153 A160154 * A160156 A160157 A160158

KEYWORD

nonn,easy,cons

AUTHOR

Harry J. Smith, May 03 2009

EXTENSIONS

Fixed my PARI program, had -n Harry J. Smith, May 19 2009

STATUS

approved

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Last modified December 3 18:47 EST 2016. Contains 278745 sequences.