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A229704 Decimal expansion of the absolute value of sum_{k>=1} (-1)^k/(k*binomial(3k,k)). 0
3, 0, 3, 5, 2, 1, 9, 0, 4, 9, 7, 2, 3, 4, 9, 1, 5, 4, 3, 7, 3, 7, 9, 0, 6, 3, 4, 7, 2, 9, 4, 7, 9, 6, 0, 1, 8, 8, 6, 2, 4, 7, 3, 9, 4, 2, 1, 6, 6, 7, 1, 3, 7, 8, 4, 3, 0, 3, 0, 6, 4, 2, 5, 3, 1, 8, 6, 9, 1, 7, 3, 5, 0, 6, 8, 2, 4, 3, 6, 5, 4, 1, 0, 1, 3, 1, 1, 5, 0, 1, 1, 7, 4, 2, 1, 7, 9, 2, 1, 6, 0, 3, 1, 3, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..104.

J. M. Borwein, R. Girgensohn, Evaluations of binomial series, Aequat. Math. 70 (2005) 25-36, Eq. (71).

EXAMPLE

-0.3035219049723491543737906347..

MATHEMATICA

HypergeometricPFQ[{1, 1, 3/2}, {4/3, 5/3}, -(4/27)]/3 // RealDigits[#, 10, 105]& // First (* Jean-Fran├žois Alcover, Feb 18 2014 *)

CROSSREFS

Sequence in context: A127749 A198431 A138188 * A014715 A131656 A194492

Adjacent sequences:  A229701 A229702 A229703 * A229705 A229706 A229707

KEYWORD

nonn,cons

AUTHOR

R. J. Mathar, Sep 27 2013

STATUS

approved

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Last modified April 22 19:11 EDT 2021. Contains 343177 sequences. (Running on oeis4.)