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!)
A024253 Expansion of sin(sin(x))*x/2. 2
0, 1, -4, 36, -512, 9360, -225600, 6935488, -258670592, 11453942016, -595273139200, 35778886145024, -2452254890065920, 189732604997505024, -16441271556334370816, 1583926386391039918080, -168491094250200804360192 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
MATHEMATICA
With[{nn=40}, Take[CoefficientList[Series[Sin[Sin[x]]x/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Oct 04 2011 *)
CROSSREFS
Cf. A009478.
Sequence in context: A366337 A008546 A277404 * A052746 A145084 A179422
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs Mar 1997
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 April 22 22:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)