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A016578
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Decimal expansion of log(3/2).
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7
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4, 0, 5, 4, 6, 5, 1, 0, 8, 1, 0, 8, 1, 6, 4, 3, 8, 1, 9, 7, 8, 0, 1, 3, 1, 1, 5, 4, 6, 4, 3, 4, 9, 1, 3, 6, 5, 7, 1, 9, 9, 0, 4, 2, 3, 4, 6, 2, 4, 9, 4, 1, 9, 7, 6, 1, 4, 0, 1, 4, 3, 2, 4, 1, 4, 4, 1, 0, 0, 6, 7, 1, 2, 4, 8, 9, 1, 4, 2, 5, 1, 2, 6, 7, 7, 5, 2, 4, 2, 7, 8, 1, 7, 3, 1, 3, 4, 0
(list;
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graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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REFERENCES
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L. B. W. Jolley, Summation of Series, Dover (1961), eq (102), page 20.
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LINKS
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Harry J. Smith, Table of n, a(n) for n = 0..20000
Index entries for transcendental numbers
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FORMULA
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Equals Sum {k>=1} 1/(k*3^k). - Robert G. Wilson v, Aug 08 2011
Equals 1/2 - 1/(2*2^2) + 1/(3*2^3) - 1/(4*2^4) + ... [Jolley].
Equals A002391-A002162. - Michel Marcus, Sep 17 2016
From Amiram Eldar, Aug 07 2020: (Start)
Equals 2 * arctanh(1/5).
Equals Integral_{x=0..oo} 1/(2*exp(x) + 1) dx. (End)
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EXAMPLE
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0.405465108108164381978013115464349136571990423462494197614013...
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MATHEMATICA
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RealDigits[Log[3/2], 10, 111][[1]] (* Robert G. Wilson v, Aug 08 2011 *)
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PROG
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(PARI) default(realprecision, 20080); x=10*log(3/2); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b016578.txt", n, " ", d)); \\ Harry J. Smith, May 17 2009
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CROSSREFS
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Cf. A016529, A002391, A002162.
Sequence in context: A197251 A049247 A175621 * A268631 A335775 A308108
Adjacent sequences: A016575 A016576 A016577 * A016579 A016580 A016581
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KEYWORD
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nonn,cons
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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