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 A188771 #7 Jul 22 2025 11:22:31 %S A188771 37,1369,26564,471349,9260851,186969392,3725504150,73772281769, %T A188771 1462969839335,29048017912245,576713868595398,11447410876473182, %U A188771 227220607547197774,4510286415908468400,89529020198750399977 %N A188771 Number of nX6 binary arrays without the pattern 0 1 0 vertically or horizontally. %C A188771 Column 6 of A188774 %H A188771 R. H. Hardin, <a href="/A188771/b188771.txt">Table of n, a(n) for n = 1..200</a> %e A188771 Some solutions for 3X6 %e A188771 ..1..0..1..1..1..1....0..0..0..1..1..1....1..1..1..1..0..0....1..1..1..0..0..0 %e A188771 ..1..1..1..1..0..0....0..1..1..1..1..1....1..1..1..1..1..0....1..0..0..1..1..0 %e A188771 ..0..1..1..1..1..0....1..1..1..1..1..1....0..0..0..0..1..1....1..1..0..1..1..0 %K A188771 nonn %O A188771 1,1 %A A188771 _R. H. Hardin_ Apr 09 2011