|
| |
|
|
A012190
|
|
tanh(arctan(sin(x)))=x-5/3!*x^3+121/5!*x^5-6845/7!*x^7+690481/9!*x^9...
|
|
0
|
|
|
|
1, -5, 121, -6845, 690481, -108594485, 24502918441, -7495966306925, 2984112329052001, -1498441322462840165, 926096248873419539161, -690670275602276172370205, 611502034169544516212107921
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
E.g.f.: tanh(arctan(sin(x))), even terms only. [From Harvey P. Dale, Sep 19 2011]
|
|
|
MATHEMATICA
|
With[{nn=30}, Take[CoefficientList[Series[Tanh[ArcTan[Sin[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 19 2011 *)
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
sign
|
|
|
AUTHOR
|
Patrick Demichel (patrick.demichel(AT)hp.com)
|
|
|
STATUS
|
approved
|
| |
|
|
