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A012327 sech(arcsin(x)*exp(x))=1-1/2!*x^2-6/3!*x^3-23/4!*x^4-20/5!*x^5... 0
1, 0, -1, -6, -23, -20, 695, 8750, 59057, 27096, -6378545, -112547358, -1027909159, 1643389124, 273544780743, 5934532973590, 63673713397473, -375014334859344, -35324004296221921, -878127940239307318 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Sech[ArcSin[x]Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Oct 25 2011 *)
CROSSREFS
Sequence in context: A062818 A154079 A160633 * A012523 A154817 A279797
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved

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Last modified February 27 16:21 EST 2024. Contains 370378 sequences. (Running on oeis4.)