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A078025 Expansion of (1-x)/(1-2*x^2+2*x^3). 1
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.

Index entries for linear recurrences with constant coefficients, signature (0,2,-2)

PROG

(PARI) Vec((1-x)/(1-2*x^2+2*x^3)+O(x^99)) \\ Charles R Greathouse IV, Sep 27 2012

CROSSREFS

Sequence in context: A294430 A294429 A107383 * A178901 A164146 A279245

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 January 18 01:36 EST 2019. Contains 319260 sequences. (Running on oeis4.)