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A140512
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Limit of A140485 (1, 4, 9, 13) table signed.Denominators of a sequence whose numerators are 1's.
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0
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1, -2, 3, -7, 10, -12, 15, -17, 20, -24, 27, -35
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| With transform in A129891 or A100597 the converging sequence becomes a polynomial family whose roots are on a curve (in imaginary coordinates). See P. Flajolet, X. Gourdon, B. Salvy.
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REFERENCES
| P. Flajolet, X. Gourdon, B. Salvy, Gazette des mathematiciens, 1993, 55, pp. 67-78.
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CROSSREFS
| Sequence in context: A051471 A047531 A102808 * A171863 A101956 A002238
Adjacent sequences: A140509 A140510 A140511 * A140513 A140514 A140515
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KEYWORD
| sign,uned
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Jul 01 2008
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