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 A236238 #4 Jan 20 2014 19:06:50 %S A236238 12,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,2455180,0,0,0,0,761,0,1,0,0,0, %T A236238 50242943,0,0,8759014,32485,12,0,504,0,37519410,0,165324,8967707165, %U A236238 1709160290,220,21372866,11440,65839003272,320310,1726338780,6220720 %N A236238 Number of binary words of length n with exactly 9 (possibly overlapping) occurrences of the subword given by the binary expansion of n. %H A236238 Alois P. Heinz, <a href="/A236238/b236238.txt">Table of n, a(n) for n = 15..1000</a> %Y A236238 Column k=9 of A233940. %K A236238 nonn %O A236238 15,1 %A A236238 _Alois P. Heinz_, Jan 20 2014