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 A236236 #4 Jan 20 2014 19:05:23 %S A236236 80,0,0,0,0,0,87,0,0,0,0,0,858,0,1,0,9553543,0,0,231,0,175577,10, %T A236236 20555,316,0,5410,875375903,67864,144,759823240,52262378,6315688, %U A236236 109816,51484880,1645920,14452780616,19851392,2749811024,658923204733,434434353500 %N A236236 Number of binary words of length n with exactly 7 (possibly overlapping) occurrences of the subword given by the binary expansion of n. %H A236236 Alois P. Heinz, <a href="/A236236/b236236.txt">Table of n, a(n) for n = 15..1000</a> %Y A236236 Column k=7 of A233940. %K A236236 nonn %O A236236 15,1 %A A236236 _Alois P. Heinz_, Jan 20 2014