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 A160839 #17 Sep 08 2022 08:45:45
%S A160839 78,1662,13488,65481,231486,660921,1619353,3537997,7072138,13168476,
%T A160839 23141394,38758149,62332986,96830175,145975971,214379497,307662550,
%U A160839 432598330,597259092,811172721,1085488230,1433150181,1869082029
%N A160839 Expansion of (78+1116*x+3492*x^2+3237*x^3+927*x^4+72*x^5+x^6)/(1-x)^7.
%C A160839 Source: the De Loera et al. article and the Haws website listed in A160747.
%H A160839 Vincenzo Librandi, <a href="/A160839/b160839.txt">Table of n, a(n) for n = 0..10000</a>
%H A160839 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (7,-21,35,-35,21,-7,1).
%F A160839 a(n) = 8923*n^6/720 +18691*n^5/240 +35375*n^4/144 +7219*n^3/16 +178361*n^2/360 +9043*n/30 + 78. - _R. J. Mathar_, Sep 11 2011
%p A160839 seq(coeff(series((78+1116*x+3492*x^2+3237*x^3+927*x^4+72*x^5+x^6)/(1-x)^7, x,n+1),x,n),n=0..25); # _Muniru A Asiru_, Apr 29 2018
%t A160839 Table[8923*n^6/720 +18691*n^5/240 +35375*n^4/144 +7219*n^3/16 +178361*n^2/360 +9043*n/30 + 78, {n, 0, 30}] (* or *) LinearRecurrence[ {7,-21,35,-35,21,-7,1}, {78, 1662, 13488, 65481, 231486, 660921, 1619353}, 30] (* _G. C. Greubel_, Apr 28 2018 *)
%o A160839 (Magma) [8923*n^6/720 +18691*n^5/240 +35375*n^4/144 +7219*n^3/16 +178361*n^2/360 +9043*n/30 + 78: n in [0..30]]; // _Vincenzo Librandi_, Sep 19 2011
%o A160839 (PARI) x='x+O('x^30); Vec((78+1116*x+3492*x^2+3237*x^3+927*x^4 +72*x^5 +x^6)/(1-x)^7) \\ _G. C. Greubel_, Apr 28 2018
%K A160839 nonn,easy
%O A160839 0,1
%A A160839 _N. J. A. Sloane_, Nov 18 2009