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 A189693 #7 Jul 22 2025 11:53:01 %S A189693 64,4096,61996,997264,11451149,140346362,1553640701,17872674996, %T A189693 198287096355,2240961706438,24972074224456,280570140162495, %U A189693 3134318411211896,35138150310304642,392994307064068970 %N A189693 Number of nX6 binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally. %C A189693 Column 6 of A189696 %H A189693 R. H. Hardin, <a href="/A189693/b189693.txt">Table of n, a(n) for n = 1..200</a> %e A189693 Some solutions for 3X6 %e A189693 ..0..1..1..1..1..1....1..1..1..1..1..0....0..0..1..0..0..0....1..1..1..1..0..0 %e A189693 ..1..1..0..0..1..0....1..1..1..0..1..1....0..1..1..1..0..1....0..0..1..1..1..1 %e A189693 ..0..1..1..0..1..0....0..1..1..0..1..1....0..0..0..0..0..0....1..1..0..1..0..0 %K A189693 nonn %O A189693 1,1 %A A189693 _R. H. Hardin_ Apr 25 2011