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A009621
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Expansion of sinh(x)*cosh(log(1+x)).
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0
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0, 1, 0, 4, -12, 71, -420, 2962, -23688, 213229, -2132280, 23455136, -281461620, 3659001139, -51226015932, 768390239086, -12294243825360, 209002145031257, -3762038610562608, 71478733600689724, -1429574672013794460
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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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Sinh[ x ]*Cosh[ Log[ 1+x ] ]
CoefficientList[Series[((1 + (1 + x)^2)*Sinh[x])/(2*(1 + 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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