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 A160817 #13 Sep 08 2022 08:45:45
%S A160817 1,69,1026,6809,28973,93389,249138,579601,1215745,2351605,4261962,
%T A160817 7322217,12030461,19031741,29144522,43389345,63019681,89554981,
%U A160817 124815922,170961849,230530413,306479405,402230786,521716913,669428961
%N A160817 Expansion of (1+62*x+564*x^2+1041*x^3+476*x^4+51*x^5+x^6)/(1-x)^7.
%C A160817 Source: the De Loera et al. article and the Haws website listed in A160747.
%H A160817 Vincenzo Librandi, <a href="/A160817/b160817.txt">Table of n, a(n) for n = 0..10000</a>
%H A160817 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (7,-21,35,-35,21,-7,1).
%F A160817 a(n) = 61*n^6/20 +151*n^5/15 +37*n^4/2 +19*n^3 +249*n^2/20 +74*n/15 +1. - _R. J. Mathar_, Sep 17 2011
%t A160817 CoefficientList[Series[(1+62*x+564*x^2+1041*x^3+476*x^4+51*x^5 +x^6)/(1-x)^7, {x, 0, 50}], x] (* or *) LinearRecurrence[{7,-21,35,-35,21,-7,1}, {1, 69, 1026, 6809, 28973, 93389, 249138}, 50] (* _G. C. Greubel_, Apr 26 2018 *)
%o A160817 (Magma) [61*n^6/20 +151*n^5/15 +37*n^4/2 +19*n^3 +249*n^2/20 +74*n/15 +1: n in [0..30]]; // _Vincenzo Librandi_, Sep 18 2011
%o A160817 (PARI) x='x+O('x^30); Vec((1+62*x+564*x^2+1041*x^3+476*x^4+51*x^5 + x^6)/(1-x)^7) \\ _G. C. Greubel_, Apr 26 2018
%K A160817 nonn
%O A160817 0,2
%A A160817 _N. J. A. Sloane_, Nov 18 2009