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A140512
Limit of A140485 (1, 4, 9, 13) table signed. Denominators of a sequence whose numerators are 1's.
0
1, -2, 3, -7, 10, -12, 15, -17, 20, -24, 27, -35
OFFSET
0,2
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.
REFERENCES
P. Flajolet, X. Gourdon, B. Salvy, Gazette des mathematiciens, 1993, 55, pp. 67-78.
CROSSREFS
Sequence in context: A047531 A102808 A215937 * A285550 A171863 A101956
KEYWORD
sign,uned
AUTHOR
Paul Curtz, Jul 01 2008
STATUS
approved