OFFSET
1,1
COMMENTS
Hausdorff dimension of Menger sponge.
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.
EXAMPLE
2.72683302786084204139609463636416210490710364692981054479420028247...
MATHEMATICA
RealDigits[ Log[3, 20], 10, 111][[1]]
PROG
(PARI) log(20)/log(3) \\ Michel Marcus, Jul 19 2020
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Robert G. Wilson v, Feb 23 2005
STATUS
approved