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Search: id:A003164
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| A003164 |
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Numerators of Van der Pol numbers.
(Formerly M5262)
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+0
2
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| 1, -1, 1, -1, -1, 1, 1, -1, -37, 111, 177, -177, -2753, 2753, 827, -827, -8386459, 8386459, 28033727, -28033727, -14529522883, 14529522883, 1799010587, -1799010587, -47497385017, 47497385017, 2217167083651, -19954503752859
(list; graph; listen)
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OFFSET
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0,9
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
F. T. Howard, Properties of the van der Pol numbers and polynomials, R. Reine Angew. Math., 260 (1973), 35-46.
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LINKS
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T. D. Noe, Table of n, a(n) for n=0..200
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EXAMPLE
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1, -1/2, 1/5, -1/20, -1/350, 1/140, 1/1050, -1/300, -37/57750, 111/38500, 177/250250, -177/45500, ... = A003163/A003164
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CROSSREFS
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Cf. A003163.
Adjacent sequences: A003161 A003162 A003163 this_sequence A003165 A003166 A003167
Sequence in context: A033215 A031419 A118536 this_sequence A138638 A044288 A044669
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KEYWORD
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sign,frac,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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