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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A012871 Numerator of [x^(2n)] in the Taylor expansion log(cot(x)*arctanh(x))= x^4/15 +x^6/15 +317*x^8/5670 +389*x^10/8505 +6895597*x^12/182432250 +... 0
1, 1, 317, 389, 6895597, 8704831, 10655226077, 1657771289, 613552118040217, 164509043030977, 6761598195684420293, 10768446708299762233, 81775784693678733811, 463196935488177564105193, 41000094641259185671029500461 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Table of n, a(n) for n=2..16.

CROSSREFS

Sequence in context: A253689 A233048 A101112 * A142003 A064396 A243958

Adjacent sequences: A012868 A012869 A012870 * A012872 A012873 A012874

KEYWORD

nonn,frac

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

EXTENSIONS

Values replaced by numerators. - R. J. Mathar, Dec 22 2011

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 December 10 02:09 EST 2022. Contains 358712 sequences. (Running on oeis4.)