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A009428
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Expansion of e.g.f. log(1+x)/cos(tanh(x)).
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2
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0, 1, -1, 5, -12, 29, -165, 993, -7056, 62649, -540225, 5044445, -56372844, 685980437, -8868937077, 124034330553, -1855540686720, 29570974192753, -502444027531233, 9041323571823925, -171561171727515820, 3427632445624110605
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OFFSET
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0,4
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LINKS
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MATHEMATICA
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With[{nn=30}, CoefficientList[Series[Log[1+x]/Cos[Tanh[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Oct 06 2011 *)
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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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Corrected Mathematica program, Harvey P. Dale, Oct 06 2011
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STATUS
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approved
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