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%I #13 Apr 02 2017 15:38:06
%S 0,1,0,-16,-320,512,330752,12652544,-474349568,-108303286272,
%T -5003002773504,1006927880388608,231200342870589440,
%U 5316662410642194432,-8274789542105574277120,-1938943461906570522132480
%N Expansion of tan(sin(x))*sin(x)/2.
%t With[{nn=40},Take[CoefficientList[Series[(Tan[Sin[x]]Sin[x])/2,{x,0,nn}], x]Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, Apr 10 2012 *)
%Y Cf. A009665.
%K sign
%O 0,4
%A _R. H. Hardin_
%E Extended with signs Mar 1997
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