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a(n) = 5^n - n^10.
1

%I #11 Sep 08 2022 08:44:48

%S 1,4,-999,-58924,-1047951,-9762500,-60450551,-282397124,-1073351199,

%T -3484831276,-9990234375,-25888596476,-61673223599,-136637788724,

%U -283151139351,-546132812500,-946923737151,-1253054447324,244230039001

%N a(n) = 5^n - n^10.

%H Vincenzo Librandi, <a href="/A024059/b024059.txt">Table of n, a(n) for n = 0..500</a>

%t Table[5^n-n^10,{n,0,20}] (* _Harvey P. Dale_, Apr 17 2014 *)

%o (Magma) [5^n-n^10: n in [0..30]]; // _Vincenzo Librandi_, Jul 03 2011

%K sign,easy

%O 0,2

%A _N. J. A. Sloane_