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A009772
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Expansion of tanh(log(1+sinh(x))).
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0
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0, 1, -1, 1, 2, -29, 194, -1049, 4472, -6299, -171736, 2993101, -34111408, 302131831, -1763868016, -4643279549, 370023946112, -7698953963639, 115221639807104, -1282442213912999, 6786946897932032, 150369505621009291
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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[Tanh[Log[1+Sinh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 29 2013 *)
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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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STATUS
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approved
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