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A013291
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Expansion of e.g.f.: cosh(log(x+1)-tanh(x))=1+3/4!*x^4-40/5!*x^5+250/6!*x^6-1008/7!*x^7...
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0
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1, 0, 0, 0, 3, -40, 250, -1008, 6517, -87120, 981924, -9387840, 103808727, -1434810936, 20930063102, -308368386480, 4838631496873, -82524970065824, 1497919608463368, -28494789851849472, 568078461069883755
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OFFSET
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0,5
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Cosh[Log[x+1]-Tanh[x]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, May 07 2022 *)
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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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STATUS
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approved
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