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 A246228 #8 Jan 12 2015 09:50:12 %S A246228 9690,0,0,0,0,0,15555589905976050,0,0,0,0,0,705927677520644167681,0,0, %T A246228 0,44817466764068599693530434,0,0,0,0, %U A246228 327785215140138748862828534217850944,0,3576951943897328654730413638351518560,0,0,0 %N A246228 Number of permutations of [n] with exactly eight (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down. %H A246228 Alois P. Heinz, <a href="/A246228/b246228.txt">Table of n, a(n) for n = 15..130</a> %Y A246228 Column k=8 of A242783. %K A246228 nonn %O A246228 15,1 %A A246228 _Alois P. Heinz_, Aug 19 2014