login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Expansion of 1/((1-2x)(1-6x)(1-8x)(1-9x)).
0

%I #7 Oct 01 2023 02:38:56

%S 1,25,405,5405,64661,721725,7683685,79078285,793624821,7813101725,

%T 75772440965,726132366765,6891899656981,64900354798525,

%U 607206802510245,5650395374640845,52342063252985141,483011998315708125

%N Expansion of 1/((1-2x)(1-6x)(1-8x)(1-9x)).

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (25, -220, 780, -864).

%F a(n) = -2^n/21 +9*6^n -128*8^n/3 +243*9^n/7. - _R. J. Mathar_, Jun 30 2013

%K nonn

%O 0,2

%A _N. J. A. Sloane_.