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Search: id:A016655
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| A016655 |
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Decimal expansion of ln(32). |
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+0
4
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| 3, 4, 6, 5, 7, 3, 5, 9, 0, 2, 7, 9, 9, 7, 2, 6, 5, 4, 7, 0, 8, 6, 1, 6, 0, 6, 0, 7, 2, 9, 0, 8, 8, 2, 8, 4, 0, 3, 7, 7, 5, 0, 0, 6, 7, 1, 8, 0, 1, 2, 7, 6, 2, 7, 0, 6, 0, 3, 4, 0, 0, 0, 4, 7, 4, 6, 6, 9, 6, 8, 1, 0, 9, 8, 4, 8, 4, 7, 3, 5, 7, 8, 0, 2, 9, 3, 1, 6, 6, 3, 4, 9, 8, 2, 0, 9, 3, 4, 3
(list; cons; graph; listen)
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OFFSET
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1,1
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COMMENT
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Contribution from Eric Desbiaux (moongerms(AT)wanadoo.fr), Nov 26 2008: (Start)
ln(32) = 10*ln(2)/2 = 5*ln(2) = 5*A002162
so 10*(1/2-1/4+1/6-1/8+1/10-1/2n...)=ln(32)
(End)
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REFERENCES
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M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 2.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,20000
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].
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EXAMPLE
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3.465735902799726547086160607290882840377500671801276270603400047466968... [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 20 2009]
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PROGRAM
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(PARI) { default(realprecision, 20080); x=log(32); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016655.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 20 2009]
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CROSSREFS
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Cf. A016460 Continued fraction. [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 20 2009]
Sequence in context: A047840 A037189 A083342 this_sequence A057757 A058838 A001177
Adjacent sequences: A016652 A016653 A016654 this_sequence A016656 A016657 A016658
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KEYWORD
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nonn,cons
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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