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 A289418 #8 Dec 07 2018 19:39:22
%S A289418 1,9,52,247,1053,4199,16017,59224,214058,760487,2665884,9246276,
%T A289418 31793724,108548332,368400045,1244027317,4182854728,14012220027,
%U A289418 46789129817,155798575851,517500496981,1715190689420,5673820630478,18736674281091,61779282616728
%N A289418 Number of Dyck paths of semilength n and height exactly 5.
%H A289418 Alois P. Heinz, <a href="/A289418/b289418.txt">Table of n, a(n) for n = 5..1000</a>
%H A289418 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (9,-29,40,-22,3).
%F A289418 G.f.: -x^5/((x-1)*(3*x-1)*(x^3-6*x^2+5*x-1)).
%t A289418 LinearRecurrence[{9,-29,40,-22,3},{1,9,52,247,1053},40] (* _Harvey P. Dale_, Dec 07 2018 *)
%Y A289418 Column k=5 of A080936.
%K A289418 nonn,easy
%O A289418 5,2
%A A289418 _Alois P. Heinz_, Jul 06 2017