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

0,1

COMMENT

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

LINKS

S. R. Finch, Triple-Free Sets of Integers

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.

EXAMPLE

0.800319483802... = 1 - 0.199680516197

CROSSREFS

Cf. A157245.

Sequence in context: A028608 A028600 A047758 this_sequence A154191 A010771 A167261

Adjacent sequences: A157241 A157242 A157243 this_sequence A157245 A157246 A157247

KEYWORD

cons,more,nonn

AUTHOR

S. R. Finch (Steven.Finch(AT)inria.fr), Feb 25 2009, Feb 27 2009

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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