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 A131465 #8 Oct 21 2022 21:27:32
%S A131465 1,3,47,259,861,2171,4603,8667,14969,24211,37191,54803,78037,107979,
%T A131465 145811,192811,250353,319907,403039,501411,616781,751003,906027,
%U A131465 1083899,1286761,1516851,1776503,2068147,2394309,2757611,3160771
%N A131465 a(n)=4n^4-3n^3+2n^2-n+1.
%H A131465 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5, -10, 10, -5, 1).
%t A131465 Table[4n^4-3n^3+2n^2-n+1,{n,0,30}] (* or *) LinearRecurrence[{5,-10,10,-5,1},{1,3,47,259,861},40] (* _Harvey P. Dale_, May 27 2017 *)
%o A131465 (PARI) a(n)=4*n^4-3*n^3+2*n^2-n+1 \\ _Charles R Greathouse IV_, Oct 21 2022
%Y A131465 Cf. A084849, A056109, A056105.
%K A131465 nonn,easy
%O A131465 0,2
%A A131465 _Mohammad K. Azarian_, Jul 26 2007