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A012158
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sech(tan(sinh(x)))=1-1/2!*x^2-7/4!*x^4-73/6!*x^6-239/8!*x^8...
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0
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1, -1, -7, -73, -239, 95311, 12793417, 1502683335, 172513245857, 17253776069663, 455220048522521, -596864160295290537, -305119961556198266191, -109834061252143977404561
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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CROSSREFS
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KEYWORD
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sign
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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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