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A065474
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Decimal expansion of Feller-Tornier constant: product(1 - 2/p^2, p prime).
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12
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3, 2, 2, 6, 3, 4, 0, 9, 8, 9, 3, 9, 2, 4, 4, 6, 7, 0, 5, 7, 9, 5, 3, 1, 6, 9, 2, 5, 4, 8, 2, 3, 7, 0, 6, 6, 5, 7, 0, 9, 5, 0, 5, 7, 9, 6, 6, 5, 8, 3, 2, 7, 0, 9, 9, 6, 1, 8, 1, 1, 2, 5, 2, 4, 5, 3, 2, 5, 0, 0, 6, 3, 4, 8, 6, 2, 4, 4, 6, 0, 9, 8, 8, 4, 5, 2, 3, 4, 8, 1, 5, 6, 8, 5, 6, 3, 7, 5
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Density of A007674, squarefree n such that n+1 is squarefree. - Charles R Greathouse IV, Aug 10 2011
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REFERENCES
| H. Cohen, High precision computation of Hardy-Littlewood constants, http://www.math.u-bordeaux.fr/~cohen/hardylw.dvi
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LINKS
| R. J. Mathar, Hardy-Littlewood constants embedded into infinite products over all positive integers, constant F_1^(2).
G. Niklasch, Some number theoretical constants: 1000-digit values [Cached copy]
Eric Weisstein's World of Mathematics, Squarefree
Eric Weisstein's World of Mathematics, Prime Products
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EXAMPLE
| 0.322634098939244670579531692548...
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CROSSREFS
| Cf. A065493, A074893.
Sequence in context: A007567 A093055 A106335 * A197586 A111702 A091029
Adjacent sequences: A065471 A065472 A065473 * A065475 A065476 A065477
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KEYWORD
| cons,nonn,changed
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Nov 19 2001
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EXTENSIONS
| Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Sep 10 2002
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