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Expansion of log(1+x)*cosh(sin(x)).
0

%I #14 Jun 23 2015 21:39:55

%S 0,1,-1,5,-12,29,-165,993,-7056,58617,-520065,5139485,-56499564,

%T 676947413,-8785333557,122824831353,-1839706861440,29397288124913,

%U -499197383688033,8976479629200565,-170396114982640300,3405066284386654349

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

%F a(n) ~ (n-1)! * (-1)^(n+1) * cosh(sin(1)). - _Vaclav Kotesovec_, Jan 23 2015

%t Log[ 1+x ]*Cosh[ Sin[ x ] ]

%t CoefficientList[Series[Cosh[Sin[x]]*Log[1 + x], {x, 0, 20}], x] * Range[0, 20]! (* _Vaclav Kotesovec_, Jan 23 2015 *)

%K sign,easy

%O 0,4

%A _R. H. Hardin_

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