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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A013556 Numerator of [x^(2n)] of the Taylor series cos(cot(x)-coth(x))= 1 -2*x^2/9 +2*x^4/243 -676*x^6/229635 +62*x^8/295245 -... 0
1, -2, 2, -676, 62, -2714132, 7223932, -120994136, 13831453742, -463898158095404, 1539871314859772, -1284535259155106488, 5072225817430199548, -10084534723769793975176, 4033550950013006300665768, -325181210925396330786544500464, 435279229771188834270330121078 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A068103 A119512 A067091 * A093596 A111819 A079237

Adjacent sequences:  A013553 A013554 A013555 * A013557 A013558 A013559

KEYWORD

sign,frac

AUTHOR

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

EXTENSIONS

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

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

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

Last modified February 17 11:35 EST 2012. Contains 206011 sequences.