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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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
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-François Alcover, Feb 18 2014 *)
CROSSREFS
Sequence in context: A127749 A198431 A138188 * A014715 A131656 A194492
KEYWORD
nonn,cons
AUTHOR
R. J. Mathar, Sep 27 2013
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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)