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A131920
Decimal expansion of 2/log(2).
2
2, 8, 8, 5, 3, 9, 0, 0, 8, 1, 7, 7, 7, 9, 2, 6, 8, 1, 4, 7, 1, 9, 8, 4, 9, 3, 6, 2, 0, 0, 3, 7, 8, 4, 2, 7, 4, 8, 5, 3, 2, 9, 1, 9, 0, 8, 3, 0, 5, 9, 7, 1, 8, 6, 8, 2, 7, 0, 8, 9, 8, 8, 1, 3, 8, 6, 2, 2, 1, 8, 4, 3, 8, 3, 6, 2, 3, 7, 0, 1, 5, 9, 7, 7, 1, 0, 5, 3, 2, 4, 5, 7, 8, 7, 0, 1, 2, 6, 8, 8, 9, 9, 3, 9, 9
OFFSET
1,1
LINKS
Itai Benjamini, Ariel Yadin and Ofer Zeitouni, Maximal Arithmetic Progressions in Random Subsets, arXiv:0707.3888 [math.PR], 2007-2012.
FORMULA
2/log(2) = 1/log(32) = 1/(5*log(2)). - Alonso del Arte, Feb 01 2015
2/log(2) = 1/arctanh(1/3). - Luc Rousseau, Sep 07 2020
EXAMPLE
2/log(2) = 2.885390081777926814719849362...
MATHEMATICA
RealDigits[2/Log[2], 10, 128][[1]] (* Alonso del Arte, Feb 01 2015 *)
PROG
(PARI) 2/log(2) \\ Charles R Greathouse IV, Feb 02 2015
CROSSREFS
Cf. A002162.
Sequence in context: A197385 A010596 A359699 * A180308 A155739 A197139
KEYWORD
cons,easy,nonn
AUTHOR
Jonathan Vos Post, Jul 28 2007
STATUS
approved