A157244 Decimal expansion of estimate of the weakly triple-free set constant.

8, 0, 0, 3, 1, 9, 4, 8, 3, 8, 0, 2

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: A265117 A345159 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