

A157244


Decimal expansion of estimate of the weakly triplefree 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. 257272.
Steven R. Finch, TripleFree 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



