|
|
A013011
|
|
Expansion of e.g.f. log(cos(x) + tan(x)).
|
|
1
|
|
|
0, 1, -2, 7, -28, 185, -1352, 12367, -129568, 1558865, -21053312, 316097527, -5218724608, 94003171145, -1834214761472, 38543705698687, -867787269787648, 20840298552277025, -531768169691512832, 14366953364916735847, -409720712943913074688
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
EXAMPLE
|
x - 2/2!*x^2 + 7/3!*x^3 - 28/4!*x^4 + 185/5!*x^5 ...
|
|
MATHEMATICA
|
With[{nn=25}, Drop[CoefficientList[Series[Log[Cos[x] + Tan[x]], {x, 0, nn}], x] Range[0, nn]!]] (* Vincenzo Librandi Jul 30 2018 *)
|
|
PROG
|
(PARI) x = 'x + O('x^30); concat([0], Vec(serlaplace(log(cos(x) + tan(x))))) \\ Michel Marcus, Jul 30 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign
|
|
AUTHOR
|
Patrick Demichel (patrick.demichel(AT)hp.com)
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|