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 A228294 #14 Jun 15 2023 13:36:46
%S A228294 0,10,2046,88572,1398100,12207030,72559410,329554456,1227133512,
%T A228294 3922632450,11111111110,28531167060,67546215516,149346699502,
%U A228294 311505013050,617839704240,1172812402960,2141993519226,3780494710542,6471681049900,10778947368420,17513875027110
%N A228294 a(n) = Sum_{k=1..10} n^k.
%H A228294 Alois P. Heinz, <a href="/A228294/b228294.txt">Table of n, a(n) for n = 0..1000</a>
%H A228294 <a href="/index/Rec#order_11">Index entries for linear recurrences with constant coefficients</a>, signature (11, -55, 165, -330, 462, -462, 330, -165, 55, -11, 1).
%F A228294 G.f.: -2*x*(341*x^8 +18392*x^7 +194612*x^6 +616880*x^5 +682550*x^4 +267344*x^3 +33308*x^2 +968*x+5) / (x-1)^11.
%F A228294 a(1) = 10, else a(n) = (n^11-n)/(n-1).
%p A228294 a:= n-> `if`(n=1, 10, (n^11-n)/(n-1)):
%p A228294 seq(a(n), n=0..30);
%t A228294 Table[Total[n^Range[10]],{n,0,30}] (* _Harvey P. Dale_, May 14 2014 *)
%Y A228294 Column k=10 of A228275.
%K A228294 nonn,easy
%O A228294 0,2
%A A228294 _Alois P. Heinz_, Aug 19 2013