A102447 Decimal expansion of log_3(20).

2, 7, 2, 6, 8, 3, 3, 0, 2, 7, 8, 6, 0, 8, 4, 2, 0, 4, 1, 3, 9, 6, 0, 9, 4, 6, 3, 6, 3, 6, 4, 1, 6, 2, 1, 0, 4, 9, 0, 7, 1, 0, 3, 6, 4, 6, 9, 2, 9, 8, 1, 0, 5, 4, 4, 7, 9, 4, 2, 0, 0, 2, 8, 2, 4, 7, 2, 8, 6, 2, 6, 7, 8, 9, 5, 2, 8, 5, 5, 4, 3, 3, 7, 7, 7, 9, 3, 8, 4, 9, 0, 8, 5, 8, 4, 3, 2, 9, 8, 2, 5, 6, 1, 2, 0

Offset: 1

Author

Robert G. Wilson v, Feb 23 2005

Keywords

• cons
• nonn

Comments

Hausdorff dimension of Menger sponge.

Examples

			2.72683302786084204139609463636416210490710364692981054479420028247...
		

References

• Manfred Schroeder, Fractals, Chaos, Power Laws, Freeman,1991, p. 179.
• Ian Stewart, Does God Play Dice?, The New Mathematics of Chaos, 2nd Ed., Blackwell Pub'l., Malden MA, 2002, p. 207.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000
• C. C. Bergemann, PlanetMath.org, Menger sponge
• O. Knill, Menger Sponge
• School of Mathematics and Statistics, University of St Andrews, Scotland, Abram Samoilovitch Besicovitch.
• Turnbull WWW Server, Felix Hausdorff.
• Eric Weisstein's World of Mathematics, Menger Sponge
• Wikipedia, Hausdorff dimension.
• Index entries for transcendental numbers

Crossrefs

Cf. A100831, A102525, A113210, A152564.

Programs

Mathematica

RealDigits[ Log[3, 20], 10, 111][[1]]

PARI

log(20)/log(3) \\ Michel Marcus, Jul 19 2020