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A012714 E.g.f.: cos(arctanh(x)*exp(x))=1-1/2!*x^2-6/3!*x^3-31/4!*x^4-140/5!*x^5... 0
1, 0, -1, -6, -31, -140, -625, -2170, -2623, 96072, 1642975, 23520882, 295668001, 3935469564, 50912723823, 723034935870, 10169862858113, 159490471907856, 2472265829827775, 43176564012771434 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Cos[ArcTanh[x]Exp[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Jan 15 2013 *)
CROSSREFS
Sequence in context: A079924 A009076 A291396 * A094951 A099621 A291002
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Jan 15 2013
STATUS
approved

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Last modified July 23 19:18 EDT 2024. Contains 374553 sequences. (Running on oeis4.)