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A009169 Expansion of cosh(tanh(log(1+x))). 0

%I #10 Jun 21 2015 21:52:41

%S 1,0,1,-3,4,20,-224,1344,-5144,-4320,356896,-4755520,42368536,

%T -207434448,-1593929336,61487349000,-997231605824,9976381236224,

%U -16539522000704,-1929601048449600,51992648244966016,-800205465246136320

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

%t Cosh[ Tanh[ Log[ 1+x ] ] ]

%K sign,easy

%O 0,4

%A _R. H. Hardin_

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

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Last modified July 24 15:09 EDT 2024. Contains 374584 sequences. (Running on oeis4.)