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A157244 Decimal expansion of estimate of the weakly triple-free set constant. 1
8, 0, 0, 3, 1, 9, 4, 8, 3, 8, 0, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

This is the asymptotic density of maximal sets in {1,..,n} encompassing no set {x,2x,3x}, as n approaches infinity.

LINKS

Table of n, a(n) for n=0..11.

F. R. K. Chung, P. Erdos and R. L. Graham, On Sparse Sets Hitting Linear Forms, Number Theory for the Millennium, v. 1, Proc. 2000 Urbana conf., A. K. Peters, 2002, pp. 257-272.

Steven R. Finch, Triple-Free Sets of Integers [From Steven Finch, Apr 20 2019]

EXAMPLE

0.800319483802... = 1 - 0.199680516197

CROSSREFS

Cf. A157245.

Sequence in context: A171918 A265117 A279418 * A154191 A010771 A246560

Adjacent sequences:  A157241 A157242 A157243 * A157245 A157246 A157247

KEYWORD

cons,more,nonn

AUTHOR

Steven Finch, Feb 25 2009, Feb 27 2009

STATUS

approved

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Last modified October 18 07:19 EDT 2019. Contains 328146 sequences. (Running on oeis4.)