id:A012265 - OEIS Search Results

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x - x^3/3! + x^5/5! - ... + (-1)^n*x^(2n+1)/(2n+1)! has 2a(n)+1 real roots.

+0
2

0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 2, 3, 4, 3, 4, 3, 4, 5, 4, 5, 6, 5, 6, 5, 6, 7, 6, 7, 8, 7, 8, 7, 8, 9, 8, 9, 8, 9, 10, 9, 10, 11, 10, 11, 10, 11, 12, 11, 12, 11, 12, 13, 12, 13, 14, 13, 14, 13, 14, 15, 14, 15, 16 (list; graph; listen)

	OFFSET	`0,5`
	REFERENCES	`Jim Propp (propp(AT)math.wisc.edu), posting to math-fun mailing list May 30 1997.`
	CROSSREFS	`Cf. A012264.` `Sequence in context: A005812 A136625 A086520 this_sequence A006641 A115756 A067731` `Adjacent sequences: A012262 A012263 A012264 this_sequence A012266 A012267 A012268`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`njas`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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