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A013317
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Expansion of e.g.f.: tanh(exp(x) - cos(x)) = x + (2/2!)*x^2 - (1/3!)*x^3 - (24/4!)*x^4 - (123/5!)*x^5 + ...
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0
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0, 1, 2, -1, -24, -123, 2, 5987, 54544, 66441, -4948798, -71261177, -226393992, 9534896269, 201964922434, 1166083278955, -34861258001632, -1052810665903343, -9456771887276926, 211545075206125327
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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[Tanh[Exp[x]-Cos[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 05 2023 *)
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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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Zero prepended and definition clarified by Harvey P. Dale, Mar 05 2023
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STATUS
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approved
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