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A010502 Decimal expansion of square root of 48. 11
6, 9, 2, 8, 2, 0, 3, 2, 3, 0, 2, 7, 5, 5, 0, 9, 1, 7, 4, 1, 0, 9, 7, 8, 5, 3, 6, 6, 0, 2, 3, 4, 8, 9, 4, 6, 7, 7, 7, 1, 2, 2, 1, 0, 1, 5, 2, 4, 1, 5, 2, 2, 5, 1, 2, 2, 2, 3, 2, 2, 7, 9, 1, 7, 8, 0, 7, 7, 3, 2, 0, 6, 7, 6, 3, 5, 2, 0, 0, 1, 4, 8, 3, 2, 4, 5, 8, 4, 7, 4, 7, 0, 2, 8, 9, 9, 4, 3, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

sqrt(48)/10 is the area enclosed by Koch's fractal snowflake based on unit-sided equilateral triangle (actually 8/5 times the latter's area). - Lekraj Beedassy, Jan 06 2005

7+sqrt(48) is the ratio of outer to inner Soddy circles' radii for three identical kissing circles. - Lekraj Beedassy, Feb 14 2006

Continued fraction expansion is 6 followed by {1, 12} repeated. - Harry J. Smith, Jun 06 2009

REFERENCES

J. N. Kapur, Mathematics Enjoyment For The Millions, Problem 47 pp. 64-67, Arya Book Depot, New Delhi 2000.

LINKS

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

L. Riddle, Area of the Koch Snowflake

FORMULA

Equals 4*A002194. - R. J. Mathar, Jul 31 2010

EXAMPLE

6.928203230275509174109785366023489467771221015241522512223227917807732... - Harry J. Smith, Jun 06 2009

MATHEMATICA

RealDigits[N[Sqrt[48], 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 24 2011 *)

PROG

(PARI) { default(realprecision, 20080); x=sqrt(48); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010502.txt", n, " ", d)); } \\ Harry J. Smith, Jun 06 2009

CROSSREFS

Cf. A040041 Continued fraction. - Harry J. Smith, Jun 06 2009

Sequence in context: A198676 A198616 A215668 * A254292 A188618 A225125

Adjacent sequences:  A010499 A010500 A010501 * A010503 A010504 A010505

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified January 18 01:36 EST 2019. Contains 319260 sequences. (Running on oeis4.)