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A131265 Decimal expansion of the negative of the first derivative of the Gamma Function at 1/2. 2
3, 4, 8, 0, 2, 3, 0, 9, 0, 6, 9, 1, 3, 2, 6, 2, 0, 2, 6, 9, 3, 8, 5, 9, 5, 1, 9, 8, 1, 4, 4, 3, 4, 9, 7, 5, 0, 0, 3, 2, 4, 2, 9, 3, 3, 4, 5, 0, 3, 7, 6, 0, 2, 1, 5, 1, 5, 4, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
T. Amdeberhan, L. Medina and V. H. Moll, The integrals in Gradshteyn and Ryzhik. Part 5: Some trigonometric integrals, arXiv:0705.2379 [math.CA], 2007, example 3.1.
FORMULA
Equals A020759 * A002161.
EXAMPLE
3.4802309069132620269385951981443497500324293345037602151543...
MATHEMATICA
RealDigits[ Sqrt[Pi]*PolyGamma[0, 1/2], 10, 59] // First (* Jean-François Alcover, Feb 20 2013 *)
PROG
(PARI) print(sqrt(Pi)*(Euler+2*log(2)));
CROSSREFS
Sequence in context: A215758 A011215 A093592 * A042975 A270107 A100231
KEYWORD
cons,easy,nonn
AUTHOR
R. J. Mathar, Sep 28 2007
STATUS
approved

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Last modified June 23 07:33 EDT 2024. Contains 373629 sequences. (Running on oeis4.)