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A009426
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Expansion of log(1+x)/cos(sinh(x)).
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1
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0, 1, -1, 5, -12, 89, -345, 3093, -17136, 182097, -1334025, 16371365, -150969324, 2101489961, -23556117585, 367038504693, -4870660226880, 84100519126561, -1293871061371761, 24562906630580293, -430689316852061740
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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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Log[ 1+x ]/Cos[ Sinh[ x ] ]
CoefficientList[Series[Log[1 + x]*Sec[Sinh[x]], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 24 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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