%I A012498
%S A012498 1,4,8,128,25216,3387008,160621056,6497102848,10675803193344,
%T A012498 4485074198855680,823007646284349440,188938583696417751040,
%U A012498 280059136770757168726016,235157137580491486235983872
%V A012498 1,-4,8,128,25216,-3387008,160621056,-6497102848,10675803193344,
%W A012498 -4485074198855680,823007646284349440,-188938583696417751040,
%X A012498 280059136770757168726016,-235157137580491486235983872
%N A012498 arcsin(cos(x)*arctan(x))=x-4/3!*x^3+8/5!*x^5+128/7!*x^7+25216/9!*x^9...
%Y A012498 Sequence in context: A013049 A060239 A127943 this_sequence A133262 A120822 
               A013065
%Y A012498 Adjacent sequences: A012495 A012496 A012497 this_sequence A012499 A012500 
               A012501
%K A012498 sign
%O A012498 0,2
%A A012498 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)