A078025 - OEIS

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A078025

Expansion of (1-x)/(1-2*x^2+2*x^3).

1, -1, 2, -4, 6, -12, 20, -36, 64, -112, 200, -352, 624, -1104, 1952, -3456, 6112, -10816, 19136, -33856, 59904, -105984, 187520, -331776, 587008, -1038592, 1837568, -3251200, 5752320, -10177536, 18007040, -31859712, 56369152, -99733504, 176457728, -312205312, 552382464 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..36.`
	PROG	`(PARI) Vec((1-x)/(1-2x^2+2x^3)+O(x^99)) \\ Charles R Greathouse IV, Sep 27 2012`
	CROSSREFS	`Sequence in context: A060798 A134320 A107383 * A178901 A164146 A090906` `Adjacent sequences: A078022 A078023 A078024 * A078026 A078027 A078028`
	KEYWORD	`sign,easy`
	AUTHOR	`N. J. A. Sloane, Nov 17 2002`
	STATUS	`approved`

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Last modified June 19 11:55 EDT 2013. Contains 226404 sequences.