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a(n) = 9^n - n^11.
2

%I #13 Sep 08 2022 08:44:48

%S 1,8,-1967,-176418,-4187743,-48769076,-362265615,-1972543774,

%T -8546887871,-30993639120,-96513215599,-253930611002,-460578834207,

%U 749705434292,18827227285297,197241376235274,1835428002807425

%N a(n) = 9^n - n^11.

%H Vincenzo Librandi, <a href="/A024112/b024112.txt">Table of n, a(n) for n = 0..300</a>

%t Table[9^n-n^11,{n,0,20}] (* _Harvey P. Dale_, May 09 2013 *)

%o (Magma) [9^n-n^11: n in [0..20]]; // _Vincenzo Librandi_, Jun 30 2011

%K sign,easy

%O 0,2

%A _N. J. A. Sloane_