login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A175473 Decimal expansion of the absolute value of the abscissa of the local minimum of the Gamma function in the interval [ -2,-1]. 2
1, 5, 7, 3, 4, 9, 8, 4, 7, 3, 1, 6, 2, 3, 9, 0, 4, 5, 8, 7, 7, 8, 2, 8, 6, 0, 4, 3, 6, 9, 0, 4, 3, 4, 6, 1, 2, 6, 5, 5, 0, 4, 0, 8, 5, 9, 1, 1, 6, 8, 4, 6, 1, 4, 9, 9, 3, 0, 1, 4, 2, 5, 6, 8, 7, 9, 7, 0, 2, 0, 3, 4, 4, 3, 9, 6, 5, 1, 4, 0, 4, 8, 1, 0, 4, 7, 3, 2, 3, 9, 8, 2, 5, 1, 8, 8, 5, 6, 2, 8, 1, 8, 7, 7, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also the location of the zero of the digamma function in the same interval.

LINKS

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

Anonymous, Particular values of the Gamma Function, Wikipedia.

E. Weisstein, Gamma Function, MathWorld.

EXAMPLE

Gamma(-1.5734984731623904587782860437..) = 2.3024072583396801358235820396..

MATHEMATICA

x /. FindRoot[ PolyGamma[0, x] == 0, {x, -3/2}, WorkingPrecision -> 110] // Abs // RealDigits // First // Take[#, 105]& (* Jean-Fran├žois Alcover, Jan 21 2013 *)

PROG

(PARI) solve(x=1.5, 1.6, psi(-x)) \\ Charles R Greathouse IV, Jul 19 2013

CROSSREFS

Cf. A030169, A030171, A175472, A175474.

Sequence in context: A155158 A241140 A245741 * A180079 A019844 A155529

Adjacent sequences:  A175470 A175471 A175472 * A175474 A175475 A175476

KEYWORD

cons,nonn

AUTHOR

R. J. Mathar, May 25 2010

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified December 22 17:45 EST 2014. Contains 252365 sequences.