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Search: id:A052138
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| A052138 |
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Numerators of coefficients in function a(x) such that a(a(a(x))) = log (1+x). |
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+0
2
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| 1, -1, 1, -5, 103, -49, 2971, -34409, 10787, -567923, 4857119, -30312479, 7045653829, -77510407993, 262952596463, -58196505296117, 74362625639717, 172749391066639, -24672728226124829, -12265872397466432881, 1772477431815925044131
(list; graph; listen)
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OFFSET
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1,4
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REFERENCES
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W. C. Yang, Composition equations, preprint, 1999.
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FORMULA
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a(x)=sum_{n=1,2,3..} A052138(n)/A052139(n)*x^n. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 21 2007
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CROSSREFS
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Cf. A052139. See also A048602, A048603, etc.
Adjacent sequences: A052135 A052136 A052137 this_sequence A052139 A052140 A052141
Sequence in context: A057207 A124986 A123626 this_sequence A007619 A057016 A083252
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KEYWORD
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sign,frac,easy,nice
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AUTHOR
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njas, Jan 22 2000
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 21 2007
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