%I A012383
%S A012383 2,12,430,26040,2903098,482065540,114403718182,36427784932336,
%T A012383 15033693897929202,7796959901543040892,4965936966951067746846,
%U A012383 3810003526358223726689960,3466033186882425920541836586
%N A012383 arctanh(tan(x)*arcsin(x))=2/2!*x^2+12/4!*x^4+430/6!*x^6+26040/8!*x^8...
%Y A012383 Sequence in context: A072446 A015181 A012378 this_sequence A012751 A012428 
               A012786
%Y A012383 Adjacent sequences: A012380 A012381 A012382 this_sequence A012384 A012385 
               A012386
%K A012383 nonn
%O A012383 0,1
%A A012383 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)