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 A175473 Decimal expansion of the absolute value of the abscissa of the local minimum of the Gamma function in the interval [ -2,-1]. 9
 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 Eric Weisstein's World of Mathematics, Gamma Function. Wikipedia, Particular values of the Gamma function EXAMPLE Gamma(-1.5734984731623904587782860437..) = 2.3024072583396801358235820396.. MATHEMATICA x /. FindRoot[ PolyGamma[0, x] == 0, {x, -3/2}, WorkingPrecision -> 110] // Abs // RealDigits // First // Take[#, 105]& (* Jean-François 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: A241140 A109986 A245741 * A180079 A019844 A155529 Adjacent sequences:  A175470 A175471 A175472 * A175474 A175475 A175476 KEYWORD cons,nonn AUTHOR R. J. Mathar, May 25 2010 STATUS approved

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Last modified January 27 18:18 EST 2021. Contains 340470 sequences. (Running on oeis4.)