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A013229
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Expansion of e.g.f. tanh(log(x+1) - arcsin(x)).
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0
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0, 0, -1, 1, -6, 15, -90, 285, -1960, 2275, -12600, -877725, 9088200, -206895975, 2291088800, -43975670375, 519884196000, -10108488755625, 124295092272000, -2588043770222625, 31717643136725000
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OFFSET
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0,5
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LINKS
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EXAMPLE
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-1/2!*x^2 + 1/3!*x^3 - 6/4!*x^4 + 15/5!*x^5 ...
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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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