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 A130886 #11 Sep 08 2022 08:45:30
%S A130886 1,11,99,427,1253,2931,5911,10739,18057,28603,43211,62811,88429,
%T A130886 121187,162303,213091,274961,349419,438067,542603,664821,806611,
%U A130886 969959,1156947,1369753,1610651,1882011,2186299,2526077,2904003
%N A130886 4n^4 + 3n^3 + 2n^2 + n + 1.
%H A130886 Vincenzo Librandi, <a href="/A130886/b130886.txt">Table of n, a(n) for n = 0..1000</a>
%F A130886 G.f.: (1 + 6*x + 54*x^2 + 32*x^3 + 3*x^4)/(1 - x)^5. - _Vincenzo Librandi_, Feb 12 2013
%t A130886 CoefficientList[Series[(1 + 6 x + 54 x^2 + 32 x^3 + 3 x^4)/(1 - x)^5, {x, 0, 35}], x] (* _Vincenzo Librandi_, Feb 12 2013 *)
%o A130886 (Magma) [4*n^4+3*n^3+2*n^2+n+1: n in [0..40]]; // _Vincenzo Librandi_, Feb 12 2013
%Y A130886 Cf. A084849, A056109, A056105.
%K A130886 nonn,easy
%O A130886 0,2
%A A130886 _Mohammad K. Azarian_, Jul 26 2007