A123739 - OEIS

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A123739

Partial sums of (-1)^floor(n*e).

1, 0, 1, 2, 1, 2, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 2, 1, 2, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 2, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 2, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 2, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 2, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4, 3, 2, 3, 2, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4, 3, 2, 3, 2, 1, 2, 1, 2, 3, 2, 3, 2, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 2, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,4`
	REFERENCES	`Kevin O'Bryant, Bruce Reznick and Monika Serbinowska, Almost alternating sums, Amer. Math. Monthly, Vol. 113 (October 2006), 673-688.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000`
	MATHEMATICA	`Rest[FoldList[Plus, 0, (-1)^Floor[E*Range[120]]]]`
	CROSSREFS	`Cf. A123724 (sum for 2^(1/3)), A123737 (sum for sqrt(2)), A123738 (sum for pi).` `Sequence in context: A121362 A091704 A175799 * A165575 A165582 A165472` `Adjacent sequences: A123736 A123737 A123738 * A123740 A123741 A123742`
	KEYWORD	`easy,sign`
	AUTHOR	`T. D. Noe, Oct 11 2006`
	STATUS	`approved`

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Last modified May 19 19:20 EDT 2013. Contains 225436 sequences.