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A013186
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Expansion of e.g.f. log(cosh(x) + arcsin(x)).
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0
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0, 1, 0, 0, 0, 8, -48, 392, -2240, 20096, -147200, 1754368, -16873472, 241340032, -2769127424, 44833033216, -593918959616, 10840711614464, -164204798541824, 3348758074142720, -57147730941444096
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OFFSET
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0,6
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LINKS
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EXAMPLE
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x + 8/5!*x^5 - 48/6!*x^6 + 392/7!*x^7 - 2240/8!*x^8 ...
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Log[Cosh[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Dec 07 2020 *)
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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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