%I A012487
%S A012487 1,3,33,1155,91553,10478435,2004751617,496122561571,172663180364481,
%T A012487 74458608812963395,41124360344562400097,27302583872806500602179,
%U A012487 21988222585362167359370081,20773428879345642355312415907
%V A012487 1,-3,33,-1155,91553,-10478435,2004751617,-496122561571,
%W A012487 172663180364481,-74458608812963395,41124360344562400097,
%X A012487 -27302583872806500602179,21988222585362167359370081
%N A012487 arcsinh(cos(x)*arcsin(x))=x-3/3!*x^3+33/5!*x^5-1155/7!*x^7+91553/9!*x^9...
%Y A012487 Sequence in context: A002112 A055549 A086894 this_sequence A113111 A118188 
               A126675
%Y A012487 Adjacent sequences: A012484 A012485 A012486 this_sequence A012488 A012489 
               A012490
%K A012487 sign
%O A012487 0,2
%A A012487 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)