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Search: id:A157244
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| A157244 |
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Decimal expansion of estimate of the weakly triple-free set constant. |
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+0
2
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| 8, 0, 0, 3, 1, 9, 4, 8, 3, 8, 0, 2
(list; cons; graph; listen)
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OFFSET
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0,1
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COMMENT
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This is the asymptotic density of maximal sets in {1,..,n} encompassing no set {x,2x,3x}, as n approaches infinity.
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LINKS
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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.
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EXAMPLE
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0.800319483802... = 1 - 0.199680516197
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CROSSREFS
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Cf. A157245.
Sequence in context: A028608 A028600 A047758 this_sequence A154191 A010771 A167261
Adjacent sequences: A157241 A157242 A157243 this_sequence A157245 A157246 A157247
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KEYWORD
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cons,more,nonn
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AUTHOR
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S. R. Finch (Steven.Finch(AT)inria.fr), Feb 25 2009, Feb 27 2009
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