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A013512
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arctanh(sec(x)-sech(x))=2/2!*x^2+362/6!*x^6+1441682/10!*x^10...
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0
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2, 362, 1441682, 32555086202, 2447023018597922, 462534850269339720842, 184789477601927787169878962, 138612178386831070025588251376282, 179134512141830902349787461672276596802
(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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