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A009811 Expansion of tanh(tan(x))*sin(x). 1

%I #14 May 17 2021 12:55:49

%S 0,2,-4,-42,-456,10154,1263668,74121726,1582556016,-396499390126,

%T -87145255604884,-10528569148387290,-379538283994219608,

%U 201132350259244110074,52827499211277672807332

%N Expansion of tanh(tan(x))*sin(x).

%t With[{nn=30},Take[CoefficientList[Series[Tanh[Tan[x]] Sin[x],{x,0,nn}],x] Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, May 17 2021 *)

%K sign

%O 0,2

%A _R. H. Hardin_

%E Extended with signs by _Olivier GĂ©rard_, Mar 15 1997

%E Previous Mathematica program replaced by _Harvey P. Dale_, May 17 2021

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)