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A024278 Expansion of e.g.f.: tan(tan(x))*sin(x)/2. 0

%I

%S 0,1,6,179,9676,854597,111361298,20061390071,4771665341848,

%T 1447947783210249,545795035419716382,250167844738073041595,

%U 137013989756844496168292,88367083240335992790622797

%N Expansion of e.g.f.: tan(tan(x))*sin(x)/2.

%t With[{nn=30},Take[CoefficientList[Series[Tan[Tan[x]]*Sin[x]/2,{x,0,nn}], x] Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, Sep 09 2012 *)

%Y Cf. A009698.

%K nonn

%O 0,3

%A _R. H. Hardin_

%E Extended and signs tested 03/97.

%E Definition clarified by _Harvey P. Dale_, Sep 09 2012

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Last modified October 20 15:15 EDT 2019. Contains 328267 sequences. (Running on oeis4.)