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A009510 Expansion of sin(tan(x))/cosh(x). 0
1, -2, 12, -464, 336, -838752, -11036608, -5128035072, -109537337088, -68456854604288, 1239349299477504, -1118496851419058176, 496293938871527395328, 82254029902844029313024, 110360677045459831814963200, 38125337574469492416381255680 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
With[{nn=40}, Take[CoefficientList[Series[Sin[Tan[x]]/Cosh[x], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jan 22 2017 *)
CROSSREFS
Sequence in context: A062738 A350790 A296623 * A091471 A357895 A012625
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
More terms from and prior Mathematica program replaced by Harvey P. Dale, Jan 22 2017
Duplicated term removed by Sean A. Irvine, Apr 25 2018
STATUS
approved

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Last modified May 23 18:34 EDT 2024. Contains 372765 sequences. (Running on oeis4.)