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 A188773 #7 Jul 22 2025 11:22:39 %S A188773 114,12996,641137,28240356,1418719059,73772281769,3772804871287, %T A188773 191430611504482,9730213136489790,495351189671153051, %U A188773 25215983801380475678,1283271380583388569167,65304983732786290676835 %N A188773 Number of nX8 binary arrays without the pattern 0 1 0 vertically or horizontally. %C A188773 Column 8 of A188774 %H A188773 R. H. Hardin, <a href="/A188773/b188773.txt">Table of n, a(n) for n = 1..200</a> %e A188773 Some solutions for 3X8 %e A188773 ..0..0..1..1..0..1..1..1....0..0..0..1..1..0..0..0....0..0..0..0..0..0..0..1 %e A188773 ..1..1..1..0..0..0..0..1....0..1..1..1..1..1..0..0....0..0..1..1..0..1..1..0 %e A188773 ..1..1..1..1..0..1..1..0....1..1..1..0..1..1..1..0....1..0..1..1..0..1..1..1 %K A188773 nonn %O A188773 1,1 %A A188773 _R. H. Hardin_ Apr 09 2011