%I A009157
%S A009157 1,1,5,13,855,38791,747539,59637061,9421489105,573991066225,
%T A009157 49290541346219,20481513828195331,2616109089676671623,
%U A009157 259051585957836649961,218489079668015355338557
%V A009157 1,1,5,13,-855,-38791,-747539,59637061,9421489105,573991066225,
%W A009157 -49290541346219,-20481513828195331,-2616109089676671623,
%X A009157 259051585957836649961,218489079668015355338557
%N A009157 Expansion of cosh(tan(sin(x))).
%t A009157 Cosh[ Tan[ Sin[ x ] ] ] (* Even Part *)
%Y A009157 Sequence in context: A007540 A157250 A155185 this_sequence A153374 A012032 
               A121228
%Y A009157 Adjacent sequences: A009154 A009155 A009156 this_sequence A009158 A009159 
               A009160
%K A009157 sign
%O A009157 0,3
%A A009157 R. H. Hardin (rhhardin(AT)att.net)
%E A009157 Extended with signs Mar 15 1997 by Olivier Gerard.