A131920 Decimal expansion of 2/log(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

Table of n, a(n) for n=1..105.

Itai Benjamini, Ariel Yadin and Ofer Zeitouni, Maximal Arithmetic Progressions in Random Subsets, arXiv:0707.3888 [math.PR], 2007-2012.

Index entries for transcendental numbers

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

Adjacent sequences: A131917 A131918 A131919 * A131921 A131922 A131923

Keyword

cons,easy,nonn

Author

Jonathan Vos Post, Jul 28 2007

Status

approved