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 A243775 #6 Jun 11 2014 22:13:37 %S A243775 64,0,1,1,0,58310,0,0,169352,82494,40040,163083704,140035157,306726, %T A243775 178134488,7368664408,6899287752,86343111918,221762412480,89389210680, %U A243775 45967495392,229706136771072,18828656,987116153856,88775675895264,303516229481536,10355664669739531 %N A243775 Number of Dyck paths of semilength n having exactly six (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=U=(1,1) and 0=D=(1,-1). %H A243775 Alois P. Heinz, <a href="/A243775/b243775.txt">Table of n, a(n) for n = 10..200</a> %e A243775 a(12) = 1: UUDDUUDDUUDDUUDDUUDDUUDD. %e A243775 a(13) = 1: UUDUUDUUDUUDUUDUUDUDDDDDDD. %Y A243775 Column k=6 of A243752. %Y A243775 Main diagonal of A243832. %K A243775 nonn %O A243775 10,1 %A A243775 _Alois P. Heinz_, Jun 10 2014