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%I #4 Feb 24 2012 12:51:09
%S 1,1,13,445,24953,2394425,320731013,61303017269,15028480222577,
%T 4798610670513265,1869279471006738045,898190788867995464109,
%U 509366426382836133377513,343690844382622422166331305
%N sec(sec(x)*arcsinh(x))=1+1/2!*x^2+13/4!*x^4+445/6!*x^6+24953/8!*x^8...
%K nonn
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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