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 A024136 #17 Sep 08 2022 08:44:48 %S A024136 1,10,-391,-18352,-247503,-1792074,-8306135,-20866436,80141153, %T A024136 1970527202,24937424601,282953722920,3133268596369,34512107644558, %U A024136 379729172536457,4177209726056276,45949661144095425,505446909911417274 %N A024136 a(n) = 11^n - n^9. %H A024136 Vincenzo Librandi, <a href="/A024136/b024136.txt">Table of n, a(n) for n = 0..300</a> %H A024136 <a href="/index/Rec#order_11">Index entries for linear recurrences with constant coefficients</a>, signature (21,-155,615,-1530,2562,-2982,2430,-1365,505,-111,11). %o A024136 (Magma) [11^n-n^9: n in [0..20]]; // _Vincenzo Librandi_, Jul 01 2011 %o A024136 (PARI) a(n)=11^n-n^9 \\ _Charles R Greathouse IV_, Jul 01 2011 %K A024136 sign,easy %O A024136 0,2 %A A024136 _N. J. A. Sloane_