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 A024007 #15 Jul 08 2025 17:25:25
%S A024007 1,0,-511,-19682,-262143,-1953124,-10077695,-40353606,-134217727,
%T A024007 -387420488,-999999999,-2357947690,-5159780351,-10604499372,
%U A024007 -20661046783,-38443359374,-68719476735,-118587876496,-198359290367
%N A024007 a(n) = 1 - n^9.
%H A024007 Vincenzo Librandi, <a href="/A024007/b024007.txt">Table of n, a(n) for n = 0..388</a>
%t A024007 Table[1 - n^9, {n, 0, 40}] (* _Vladimir Joseph Stephan Orlovsky_, Apr 15 2011 *)
%o A024007 (Magma) [1-n^9: n in [0..50]]; // _Vincenzo Librandi_, Apr 29 2011
%Y A024007 Cf. A024004, A024006.
%K A024007 sign,easy
%O A024007 0,3
%A A024007 _N. J. A. Sloane_