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A013212
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Expansion of e.g.f. tan(log(x+1) - sin(x)).
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0
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0, 0, -1, 3, -6, 23, -150, 1351, -12600, 118187, -1217160, 14287141, -188257608, 2702562653, -41510829360, 680290364755, -11907404789280, 222160337026823, -4398121126494144, 91965696132459313
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OFFSET
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0,4
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LINKS
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EXAMPLE
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-1/2!*x^2 + 3/3!*x^3 - 6/4!*x^4 + 23/5!*x^5 ...
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MATHEMATICA
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With[{nn=20}, Drop[CoefficientList[Series[Tan[Log[x+1]-Sin[x]], {x, 0, nn}], x] Range[0, nn]!, 2]] (* Harvey P. Dale, Nov 06 2011 *)
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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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a(0)=a(1)=0 inserted and title improved by Sean A. Irvine, Aug 01 2018
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STATUS
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approved
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