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 A246229 #8 Jan 12 2015 09:51:41 %S A246229 571,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3744763744425692221838464,0,0,0,0, %T A246229 22782734075857073364773911020731544,0,0,0,0,0, %U A246229 2416100449345559771899241542815463200217246990336,0,0,938240970212978118278669946671983079935585224737310 %N A246229 Number of permutations of [n] with exactly nine (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down. %H A246229 Alois P. Heinz, <a href="/A246229/b246229.txt">Table of n, a(n) for n = 15..130</a> %Y A246229 Column k=9 of A242783. %K A246229 nonn %O A246229 15,1 %A A246229 _Alois P. Heinz_, Aug 19 2014