|
|
A009721
|
|
Expansion of e.g.f.: tan(tanh(x)*exp(x)).
|
|
0
|
|
|
0, 1, 2, 3, 20, 157, 902, 6895, 77352, 837145, 9239882, 124480059, 1864519868, 28461793141, 470175087566, 8596601614567, 165789417707088, 3347308657310641, 72262366126097810, 1655981959056540147, 39676337445225379172, 996780437366905850317
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
MATHEMATICA
|
With[{nn=20}, CoefficientList[Series[Tan[Tanh[x]*Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Sep 17 2016 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
Definition clarified and prior Mathematica program replaced by Harvey P. Dale, Sep 17 2016
|
|
STATUS
|
approved
|
|
|
|