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 A189194 #7 Jul 22 2025 11:36:53 %S A189194 128,16384,537496,16316636,379515360,8646366042,184841938568, %T A189194 3925306136096,81929775932500,1704770564043390,35287851485832028, %U A189194 729339086587874460,15048014087794649376,310256937493956570170 %N A189194 Number of nX7 binary arrays without the pattern 0 0 1 vertically or antidiagonally. %C A189194 Column 7 of A189196 %H A189194 R. H. Hardin, <a href="/A189194/b189194.txt">Table of n, a(n) for n = 1..200</a> %e A189194 Some solutions for 3X7 %e A189194 ..0..0..1..1..1..1..0....0..0..1..1..1..0..0....0..0..1..1..0..1..0 %e A189194 ..0..0..1..1..1..1..0....1..1..0..0..1..1..0....1..1..0..0..1..1..1 %e A189194 ..0..0..1..1..0..1..0....0..0..1..1..1..0..0....1..0..0..1..1..0..1 %K A189194 nonn %O A189194 1,1 %A A189194 _R. H. Hardin_ Apr 18 2011