cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A203817 Decimal expansion of gamma*Pi.

Original entry on oeis.org

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

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Author

Yalcin Aktar, Jan 06 2012

Keywords

Examples

			1.8133764923916034996131345312710400191076641813726...
		

Crossrefs

Cf. A001620 (gamma), A000796 (Pi).

Programs

  • Magma
    R:= RealField(100); EulerGamma(R)*Pi(R); // G. C. Greubel, Sep 06 2018
  • Maple
    evalf(gamma*Pi) ;
  • Mathematica
    RealDigits[EulerGamma*Pi, 10, 100][[1]] (* G. C. Greubel, Sep 06 2018 *)
  • PARI
    Euler*Pi
    

Formula

Equals -2 * Integral_{x=0..oo} log(x)*sin(x)/x dx. - Amiram Eldar, Aug 18 2020