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A108929 Expansion of (1-x^4-2*x^3)/((x-1)*(x^2+x+1)*(x^2+4*x-1)). 0

%I #6 Oct 02 2023 10:29:20

%S 1,4,17,71,300,1271,5383,22802,96591,409165,1733250,7342165,31101909,

%T 131749800,558101109,2364154235,10014718048,42423026427,179706823755,

%U 761250321446,3224708109539,13660082759601,57865039147942

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

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (4, 1, 1, -4, -1).

%p seriestolist(series((1-x^4-2*x^3)/((x-1)*(x^2+x+1)*(x^2+4*x-1)), x=0,25)); -or- -1kbaseksum[A*B] with A = - 'i + 'j - i' + j' - 'kk' - 'ik' - 'jk' - 'ki' - 'kj' and B = + .5'i + .5i'; SumType: default

%K easy,nonn

%O 0,2

%A _Creighton Dement_, Jul 19 2005

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Last modified March 29 05:48 EDT 2024. Contains 371265 sequences. (Running on oeis4.)