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A009394 Expansion of e.g.f.: log(1+tanh(x)*cos(x)). 0


%S 0,1,-1,-3,14,-35,-16,1057,-10256,59865,-7936,-5446683,85543424,

%T -726781835,-22368256,133713611977,-2849981597696,32440474082865,

%U -209865342976,-10034804733270963,271127940241424384,-3854719922524818035

%N Expansion of e.g.f.: log(1+tanh(x)*cos(x)).

%t With[{nn=30},CoefficientList[Series[Log[1+Tanh[x]Cos[x]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Aug 24 2014 *)

%K sign,easy

%O 0,4

%A _R. H. Hardin_

%E Extended with signs by _Olivier Gérard_, Mar 15 1997

%E Definition clarified and prior Mathematica program replaced by _Harvey P. Dale_, Aug 24 2014

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Last modified December 7 04:21 EST 2021. Contains 349567 sequences. (Running on oeis4.)