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A010482 Decimal expansion of square root of 27. 9
5, 1, 9, 6, 1, 5, 2, 4, 2, 2, 7, 0, 6, 6, 3, 1, 8, 8, 0, 5, 8, 2, 3, 3, 9, 0, 2, 4, 5, 1, 7, 6, 1, 7, 1, 0, 0, 8, 2, 8, 4, 1, 5, 7, 6, 1, 4, 3, 1, 1, 4, 1, 8, 8, 4, 1, 6, 7, 4, 2, 0, 9, 3, 8, 3, 5, 5, 7, 9, 9, 0, 5, 0, 7, 2, 6, 4, 0, 0, 1, 1, 1, 2, 4, 3, 4, 3, 8, 5, 6, 0, 2, 7, 1, 7, 4, 5, 7, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Continued fraction expansion is 5 followed by {5, 10} repeated. - Harry J. Smith, Jun 04 2009

6 + sqrt(27) represents the surface of a dodecahedron of side equal to one. S = 3*a^2(2 + sqrt(3)) with a = 1. - Vincenzo Librandi, Jul 10 2010

sqrt(27) is the perimeter of an equilateral triangle whose incircle's diameter is 1. - Martin Janecke, May 31 2016

LINKS

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

EXAMPLE

5.196152422706631880582339024517617100828415761431141884167420938355799... - Harry J. Smith, Jun 04 2009

MATHEMATICA

RealDigits[N[Sqrt[27], 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 22 2011 *)

PROG

(PARI) { default(realprecision, 20080); x=sqrt(27); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010482.txt", n, " ", d)); } \\ Harry J. Smith, Jun 04 2009

CROSSREFS

Cf. A040021 Continued fraction. - Harry J. Smith, Jun 04 2009

Sequence in context: A207873 A198671 A129343 * A135856 A097414 A154605

Adjacent sequences:  A010479 A010480 A010481 * A010483 A010484 A010485

KEYWORD

nonn,cons,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified January 16 06:59 EST 2019. Contains 319188 sequences. (Running on oeis4.)