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A009183 Expansion of e.g.f.: cosh(x)/cosh(log(1+x)). 0
1, 0, 0, 3, -11, 30, -14, -525, 4593, -22428, 17596, 1039995, -13641275, 96216978, -105681666, -8517557685, 148962722881, -1373978443800, 1940315387608, 198084321525267, -4330346354150859, 49339565916861990, -85160442362115350 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Cosh[x]/Cosh[Log[1+x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 13 2012 *)
CROSSREFS
Sequence in context: A328550 A179234 A338051 * A165893 A106397 A295144
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified by Harvey P. Dale, Aug 13 2012
STATUS
approved

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Last modified June 21 20:04 EDT 2024. Contains 373559 sequences. (Running on oeis4.)