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A009170 Expansion of cosh(tanh(x))/exp(x). 0

%I #11 Apr 01 2017 11:48:27

%S 1,-1,2,-4,0,24,8,-456,192,11264,-20480,-289664,1837696,-3000960,

%T -187743488,2697206272,22698672128,-625547980800,-3236847570944,

%U 138214081974272,536307107184640,-32824743592198144,-101121059849109504

%N Expansion of cosh(tanh(x))/exp(x).

%t Cosh[ Tanh[ x ] ]/Exp[ x ]

%K sign,easy

%O 0,3

%A _R. H. Hardin_

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

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Last modified July 25 08:17 EDT 2024. Contains 374586 sequences. (Running on oeis4.)