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A009353
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Expansion of log(1+sinh(x))*exp(x).
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4
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0, 1, 1, 3, 0, 20, -85, 637, -5096, 46944, -484401, 5544341, -69697672, 954728788, -14155260197, 225856326165, -3858874322928, 70293211672352, -1359957800892673, 27849583539856909, -601828107666316064
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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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a(n) ~ (n-1)! * (-1)^(n+1) * (sqrt(2)-1) / (log(1+sqrt(2)))^n. - Vaclav Kotesovec, Jan 23 2015
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MATHEMATICA
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Log[ 1+Sinh[ x ] ]*Exp[ x ]
CoefficientList[Series[E^x*Log[1 + Sinh[x]], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 23 2015 *)
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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