%I #19 Sep 08 2022 08:44:48
%S 1,9,-412,-18683,-252144,-1853125,-9077696,-30353607,-34217728,
%T 612579511,9000000000,97642052309,994840219648,9989395500627,
%U 99979338953216,999961556640625,9999931280523264,99999881412123503
%N a(n) = 10^n - n^9.
%H Vincenzo Librandi, <a href="/A024123/b024123.txt">Table of n, a(n) for n = 0..300</a>
%H <a href="/index/Rec#order_11">Index entries for linear recurrences with constant coefficients</a>, signature (20,-145,570,-1410,2352,-2730,2220,-1245,460,-101,10).
%t Table[10^n-n^9,{n,0,30}] (* or *) LinearRecurrence[ {20,-145,570,-1410,2352,-2730,2220,-1245,460,-101,10},{1,9,-412,-18683,-252144,-1853125,-9077696,-30353607,-34217728,612579511,9000000000},30] (* _Harvey P. Dale_, Feb 06 2014 *)
%o (Magma) [10^n-n^9: n in [0..20]]; // _Vincenzo Librandi_, Jul 01 2011
%o (PARI) a(n)=10^n-n^9 \\ _Charles R Greathouse IV_, Jul 01 2011
%K sign,easy
%O 0,2
%A _N. J. A. Sloane_
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