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A013497
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E.g.f. log(cosh(x)-log(x+1))= -x+1/2!*x^2+2/3!*x^3+5/4!*x^4-13/5!*x^5...
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0
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-1, 1, 2, 5, -13, -63, -453, 1822, 9683, 174325, -960133, -2767796, -180618579, 1333355779, -2799332651, 400791892784, -3944083024649, 32532084129049, -1656524167774985, 21382796711385164, -305269868753768647
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OFFSET
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1,3
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LINKS
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MATHEMATICA
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With[{nn=30}, Rest[CoefficientList[Series[Log[Cosh[x]-Log[x+1]], {x, 0, nn}], x] Range[0, nn]!]] (* Harvey P. Dale, Mar 30 2012 *)
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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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EXTENSIONS
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Offset and additional first term from R. J. Mathar, Dec 22 2011
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STATUS
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approved
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