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%I #20 Sep 08 2022 08:44:48
%S 1,9,68,757,8976,96875,992224,9983193,99967232,999940951,9999900000,
%T 99999838949,999999751168,9999999628707,99999999462176,
%U 999999999240625,9999999998951424,99999999998580143,999999999998110432
%N a(n) = 10^n - n^5.
%H Vincenzo Librandi, <a href="/A024119/b024119.txt">Table of n, a(n) for n = 0..300</a>
%H <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (16,-75,170,-215,156,-61,10).
%F G.f.: ( -1 + 7*x + x^2 - 174*x^3 - 649*x^4 - 253*x^5 - 11*x^6 ) / ( (10*x-1)*(x-1)^6 ). - _R. J. Mathar_, Jun 30 2011
%t Table[10^n-n^5,{n,0,20}] (* or *) LinearRecurrence[ {16,-75,170,-215,156,-61,10},{1,9,68,757,8976,96875,992224},20] (* _Harvey P. Dale_, Oct 08 2012 *)
%o (Magma) [10^n-n^5: n in [0..20]]; // _Vincenzo Librandi_, Jun 30 2011
%o (PARI) a(n) = 10^n-n^5; \\ _Altug Alkan_, Oct 04 2018
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_