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%I #4 Feb 24 2012 12:51:09
%S 1,3,53,1855,156425,19537595,3987121981,1087120051511,408148372272017,
%T 193531749818796403,116081047496759766725,84538055378229508493871,
%U 74205177566923695709271961
%N arcsin(sec(x)*arcsinh(x))=x+3/3!*x^3+53/5!*x^5+1855/7!*x^7...
%K nonn
%O 0,2
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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