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A016643
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Decimal expansion of ln(20).
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2
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2, 9, 9, 5, 7, 3, 2, 2, 7, 3, 5, 5, 3, 9, 9, 0, 9, 9, 3, 4, 3, 5, 2, 2, 3, 5, 7, 6, 1, 4, 2, 5, 4, 0, 7, 7, 5, 6, 7, 6, 6, 0, 1, 6, 2, 2, 9, 8, 9, 0, 2, 8, 2, 3, 0, 1, 5, 4, 0, 0, 7, 9, 1, 0, 4, 6, 0, 9, 6, 6, 2, 3, 1, 6, 4, 7, 0, 4, 7, 1, 9, 5, 8, 4, 1, 8, 6, 0, 5, 3, 2, 0, 8, 6, 0, 1, 6, 9, 8, 5, 8, 8, 3, 9, 6
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| 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
| 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
| 2.995732273553990993435223576142540775676601622989028230154007910460966... [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 17 2009]
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MATHEMATICA
| RealDigits[Log[20], 10, 150][[1]] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 09 2006
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PROG
| (PARI) { default(realprecision, 20080); x=log(20); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016643.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 17 2009]
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CROSSREFS
| Cf. A016448 Continued fraction. [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 17 2009]
Sequence in context: A137618 A021338 A021889 * A087042 A003678 A201683
Adjacent sequences: A016640 A016641 A016642 * A016644 A016645 A016646
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KEYWORD
| nonn,cons
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 09 2006
Fixed my PARI program, had -n Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 20 2009
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