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A009222
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Expansion of e.g.f.: exp(sinh(tanh(x))).
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0
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1, 1, 1, 0, -3, -12, -27, 248, 2425, -3504, -143031, -115904, 8956533, 17130688, -618394579, -265254272, 46232494321, -452604387072, -3608163168111, 186145181366272, 254307747662573, -61549828575435776, 15725973912655477
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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=30}, CoefficientList[Series[Exp[Sinh[Tanh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 03 2024 *)
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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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Previous Mathematica program replaced and definition clarified by Harvey P. Dale, May 03 2024
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STATUS
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approved
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