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 A289419 #5 Jul 06 2017 10:15:36 %S A289419 1,11,75,410,1975,8778,36938,149501,587951,2262375,8558854,31945379, %T A289419 117939506,431530926,1567159901,5655480303,20299352107,72522832282, %U A289419 258054207727,914973048634,3234061126690,11399437533757,40081465493919,140617625960143,492342898340494 %N A289419 Number of Dyck paths of semilength n and height exactly 6. %H A289419 Alois P. Heinz, <a href="/A289419/b289419.txt">Table of n, a(n) for n = 6..1000</a> %H A289419 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (11,-46,91,-86,34,-4). %F A289419 G.f.: x^6/((2*x-1)*(2*x^2-4*x+1)*(x^3-6*x^2+5*x-1)). %Y A289419 Column k=6 of A080936. %K A289419 nonn,easy %O A289419 6,2 %A A289419 _Alois P. Heinz_, Jul 06 2017