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A009601
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Expansion of e.g.f.: sinh(tan(log(1+x))).
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1
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0, 1, -1, 5, -24, 166, -1350, 13026, -143808, 1790560, -24782400, 377280056, -6262125936, 112504698840, -2174463129384, 44977635083096, -991157036904960, 23178047520065536, -573180268144301568, 14943307041391438080
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OFFSET
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0,4
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LINKS
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G. C. Greubel, Table of n, a(n) for n = 0..429
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Sinh[Tan[Log[1+x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 10 2017 *)
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PROG
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(PARI) x='x+O('x^30); concat([0], Vec(serlaplace(sinh(tanh(log(1+x)))))) \\ G. C. Greubel, Jan 30 2018
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CROSSREFS
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Sequence in context: A340358 A009424 A184597 * A009676 A192995 A027851
Adjacent sequences: A009598 A009599 A009600 * A009602 A009603 A009604
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KEYWORD
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sign,easy
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AUTHOR
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R. H. Hardin
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EXTENSIONS
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Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified and previous Mathematica program replaced by Harvey P. Dale, Jun 10 2017
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STATUS
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approved
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