A028192 - OEIS

%I #15 Aug 31 2018 02:55:16

%S 1,34,735,12920,201821,2925054,40302475,535908340,6945496041,

%T 88331974874,1107704935415,13744775469360,169190996868661,

%U 2070039164549494,25209912745227555,305937712008039980

%N Expansion of 1/((1-5x)(1-8x)(1-9x)(1-12x)).

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (34,-421,2244,-4320).

%F a(n) = 21*a(n-1) - 108*a(n-2) + (8^(n+1) - 5^(n+1))/3, n >= 2. - _Vincenzo Librandi_, Mar 12 2011

%F a(n) = (7*8^(n+3) - 7*9^(n+3) + 12^(n+3) - 5^(n+3))/84. - _Bruno Berselli_, Mar 12 2011

%K nonn

%O 0,2

%A _N. J. A. Sloane_