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A012099
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Expansion of e.g.f.: exp(arcsin(sinh(x)))=1+x+1/2!*x^2+3/3!*x^3+9/4!*x^4+41/5!*x^5...
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0
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1, 1, 1, 3, 9, 41, 201, 1403, 9649, 90641, 809201, 9578803, 105268089, 1504717241, 19650225401, 329275068203, 4982657935329, 95780865239841, 1648151554792801, 35749976635509603, 689411371817131369
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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=20}, CoefficientList[Series[Exp[ArcSin[Sinh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Apr 21 2024 *)
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CROSSREFS
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KEYWORD
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nonn
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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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