%I A013334
%S A013334 1,0,0,4,0,0,0,1104,5040,0,184800,1784704,39948480,201801600,
%T A013334 2969366400,24788541696,621491320320,12903078988800,20131497484800,
%U A013334 2944178363780096,8434762785469440,1051002016730265600
%V A013334 1,0,0,-4,0,0,0,-1104,-5040,0,184800,-1784704,-39948480,-201801600,
%W A013334 2969366400,24788541696,-621491320320,-12903078988800,
%X A013334 20131497484800,2944178363780096,8434762785469440
%N A013334 arcsinh(exp(x)-sec(x))=x-4/4!*x^4-1104/8!*x^8-5040/9!*x^9...
%Y A013334 Sequence in context: A057386 A099306 A101193 this_sequence A156393 A096623 
               A152889
%Y A013334 Adjacent sequences: A013331 A013332 A013333 this_sequence A013335 A013336 
               A013337
%K A013334 sign
%O A013334 0,4
%A A013334 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)