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A013201
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log(sech(x)+log(x+1)) = x - 3/2!*x^2 + 10/3!*x^3 - 51/4!*x^4 + 373/5!*x^5 + ...
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0
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0, 1, -3, 10, -51, 373, -3305, 34543, -421722, 5884933, -92262997, 1606210571, -30753868288, 642299748231, -14531175088131, 354020726656465, -9240811268934752, 257285058656341145, -7611050202054313081
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Log[Sech[x]+Log[x+1]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, May 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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