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A078028 Expansion of (1-x)/(1-x^2+2*x^3). 4

%I

%S 1,-1,1,-3,3,-5,9,-11,19,-29,41,-67,99,-149,233,-347,531,-813,1225,

%T -1875,2851,-4325,6601,-10027,15251,-23229,35305,-53731,81763,-124341,

%U 189225,-287867,437907,-666317,1013641,-1542131,2346275,-3569413,5430537,-8261963,12569363,-19123037,29093289

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

%C Number of compositions of n into parts congruent to (0,2} mod 3 (offset 2). - _Vladeta Jovovic_, Feb 09 2005

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,-2).

%o (PARI) Vec((1-x)/(1-x^2+2*x^3)+O(x^99)) \\ _Charles R Greathouse IV_, Sep 25 2012

%K sign,easy

%O 0,4

%A _N. J. A. Sloane_, Nov 17 2002

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Last modified January 21 20:10 EST 2019. Contains 319350 sequences. (Running on oeis4.)