This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A024112 #13 Sep 08 2022 08:44:48
%S A024112 1,8,-1967,-176418,-4187743,-48769076,-362265615,-1972543774,
%T A024112 -8546887871,-30993639120,-96513215599,-253930611002,-460578834207,
%U A024112 749705434292,18827227285297,197241376235274,1835428002807425
%N A024112 a(n) = 9^n - n^11.
%H A024112 Vincenzo Librandi, <a href="/A024112/b024112.txt">Table of n, a(n) for n = 0..300</a>
%t A024112 Table[9^n-n^11,{n,0,20}] (* _Harvey P. Dale_, May 09 2013 *)
%o A024112 (Magma) [9^n-n^11: n in [0..20]]; // _Vincenzo Librandi_, Jun 30 2011
%K A024112 sign,easy
%O A024112 0,2
%A A024112 _N. J. A. Sloane_