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A013505
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arcsin(sec(x)-sech(x))=2/2!*x^2+242/6!*x^6+680642/10!*x^10...
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0
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2, 242, 680642, 12295286642, 793097630442242, 133559779986589891442, 48615807873566074448898242, 33724812804150581105792438246642, 40740665803925610662412399036224240642, 80080558510702094594473104537545729044704242, 242897198718040825682993782394774029906856140981442
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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EXTENSIONS
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STATUS
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approved
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