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A013494
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exp(arcsinh(x)-arctanh(x)) = 1-3/3!*x^3-15/5!*x^5+90/6!*x^6-945/7!*x^7...
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1
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1, 0, 0, -3, 0, -15, 90, -945, 2520, -36855, 368550, -5145525, 31808700, -541215675, 7577019450, -134726216625, 1338322986000, -27408165159375, 493346972868750, -10700744687758125, 147490229469082500
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OFFSET
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0,4
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LINKS
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FORMULA
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MATHEMATICA
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CoefficientList[Series[Exp[ArcSinh[x]-ArcTanh[x]], {x, 0, 20}], x]* Range[0, 20]! (* Vaclav Kotesovec, Nov 01 2013 *)
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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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STATUS
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approved
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