A278326 Decimal expansion of gamma/log(2)^2.

1, 2, 0, 1, 3, 9, 8, 7, 8, 0, 2, 7, 6, 5, 7, 7, 8, 2, 4, 1, 9, 4, 5, 1, 5, 0, 5, 5, 7, 5, 6, 1, 3, 5, 1, 1, 6, 8, 0, 8, 0, 2, 5, 2, 5, 0, 1, 5, 6, 0, 5, 3, 6, 0, 6, 6, 1, 9, 4, 0, 0, 5, 5, 1, 5, 6, 5, 7, 9, 2, 6, 2, 6, 5, 3, 6, 3, 6, 2, 1, 3, 8, 5, 1, 2, 2, 0, 8, 1, 5, 4, 1, 0, 3, 3, 7, 4, 5, 0, 9, 7, 6, 3, 2, 8

Offset

1,2

Links

Alois P. Heinz, Table of n, a(n) for n = 1..10000

Formula

Equals -Integral_{x = -infinity..infinity} x*2^x*exp(-2^x) dx.

Equals A001620/A253191 = A100668/A002162.

Example

1.2013987802765778241945150557561351168...

Mathematica

RealDigits[EulerGamma/Log[2]^2, 10, 120][[1]] (* Harvey P. Dale, Dec 07 2017 *)

Prog

(PARI) Euler/log(2)^2 \\ Michel Marcus, Nov 19 2016
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); EulerGamma(R)/Log(2)^2; // G. C. Greubel, Sep 05 2018

Crossrefs

Cf. A001620, A002162, A100668, A253191.

Sequence in context: A271701 A271699 A216701 * A018843 A152836 A152837

Adjacent sequences: A278323 A278324 A278325 * A278327 A278328 A278329

Keyword

nonn,cons

Author

Alois P. Heinz, Nov 18 2016

Status

approved