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Expansion of log(1+log(1+sin(x))).
1

%I #18 Jun 21 2015 21:49:43

%S 0,1,-2,6,-27,159,-1166,10238,-104794,1225453,-16119336,235574622,

%T -3786965344,66410682571,-1261666673216,25812801065366,

%U -565833283234896,13230321868853913,-328685995742718848,8646006262194855830

%N Expansion of log(1+log(1+sin(x))).

%H Vincenzo Librandi, <a href="/A009308/b009308.txt">Table of n, a(n) for n = 0..200</a>

%t With[{nn=20},CoefficientList[Series[Log[1+Log[1+Sin[x]]],{x,0,nn}], x] Range[0,nn]!] (* _Harvey P. Dale_, Mar 21 2012 *)

%K sign,easy

%O 0,3

%A _R. H. Hardin_

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