The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 G. C. Greubel, Table of n, a(n) for n = 1..10000 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 Cf. A020759, A002161. Sequence in context: A215758 A011215 A093592 * A042975 A270107 A100231 Adjacent sequences: A131262 A131263 A131264 * A131266 A131267 A131268 KEYWORD cons,easy,nonn AUTHOR R. J. Mathar, Sep 28 2007 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

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