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A009160 Expansion of cosh(tan(x))/cos(x). 0

%I #8 Jan 27 2014 09:12:45

%S 1,2,20,448,17296,1013600,83547584,9196867072,1301697829120,

%T 230093807905280,49636887216382976,12825384465418534912,

%U 3908078275606800338944,1386160615200497825275904

%N Expansion of cosh(tan(x))/cos(x).

%t Cosh[ Tan[ x ] ]/Cos[ x ] (* Even Part *)

%K nonn

%O 0,2

%A _R. H. Hardin_

%E Extended and signs tested Mar 15 1997 by _Olivier GĂ©rard_.

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Last modified March 28 14:02 EDT 2024. Contains 371254 sequences. (Running on oeis4.)