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 A024124 #17 Sep 08 2022 08:44:48
%S A024124 1,9,-924,-58049,-1038576,-9665625,-59466176,-272475249,-973741824,
%T A024124 -2486784401,0,74062575399,938082635776,9862141508151,99710745345024,
%U A024124 999423349609375,9998900488372224,99997984006099551,999996429532773376
%N A024124 a(n) = 10^n - n^10.
%H A024124 Vincenzo Librandi, <a href="/A024124/b024124.txt">Table of n, a(n) for n = 0..300</a>
%F A024124 From _Chai Wah Wu_, Jan 26 2020: (Start)
%F A024124 a(n) = 21*a(n-1) - 165*a(n-2) + 715*a(n-3) - 1980*a(n-4) + 3762*a(n-5) - 5082*a(n-6) + 4950*a(n-7) - 3465*a(n-8) + 1705*a(n-9) - 561*a(n-10) + 111*a(n-11) - 10*a(n-12) for n > 11.
%F A024124 G.f.: (9*x^11 + 10140*x^10 + 477332*x^9 + 4504245*x^8 + 12648018*x^7 + 11793648*x^6 + 3241104*x^5 + 23538*x^4 - 37875*x^3 - 948*x^2 - 12*x + 1)/((x - 1)^11*(10*x - 1)). (End)
%t A024124 lst={}; Do[AppendTo[lst,10^n-n^10],{n,0,5!}]; lst (* _Vladimir Joseph Stephan Orlovsky_, Jan 15 2009 *)
%t A024124 Table[10^n-n^10,{n,0,20}] (* _Harvey P. Dale_, Apr 22 2018 *)
%o A024124 (Magma) [10^n-n^10: n in [0..20]]; // _Vincenzo Librandi_, Jun 30 2011
%Y A024124 Cf. A024012, A024026, A058794, A024040, A024054, A024068, A024082, A024096, A024110. - _Vladimir Joseph Stephan Orlovsky_, Jan 15 2009
%K A024124 sign,easy
%O A024124 0,2
%A A024124 _N. J. A. Sloane_