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Partial sums of A006864.
0

%I #17 Apr 15 2024 06:49:56

%S 0,1,3,9,23,60,152,388,984,2501,6347,16117,40911,103864,263664,669352,

%T 1699216,4313673,10950739,27799745,70572839,179157364,454811656,

%U 1154592108,2931065640,7440849549,18889457819,47953075565

%N Partial sums of A006864.

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (3,0,-4,3,-1).

%F a(n) = +3*a(n-1) -4*a(n-3) +3*a(n-4) -a(n-5). G.f.: x^2 / ( (x-1)*(x^4-2*x^3+2*x^2+2*x-1) ). [_R. J. Mathar_, Sep 19 2010]

%Y Cf. A006864.

%K nonn,easy

%O 1,3

%A _Jonathan Vos Post_, Sep 07 2010

%E Edited (changed definition, deleted incorrect terms) by _N. J. A. Sloane_, Sep 09 2010