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 A189068 #7 Jul 22 2025 11:32:40 %S A189068 64,4096,83737,1228512,22289912,477128662,9879008482,193897027545, %T A189068 3795059283970,75338008528542,1501174987570253,29820335296953677, %U A189068 591419918694769380,11735316461620194046,232979927617517115736 %N A189068 Number of 6Xn binary arrays without the pattern 0 1 0 antidiagonally or horizontally. %C A189068 Row 6 of A189064 %H A189068 R. H. Hardin, <a href="/A189068/b189068.txt">Table of n, a(n) for n = 1..200</a> %e A189068 Some solutions for 6X3 %e A189068 ..0..0..1....1..1..1....1..0..0....0..1..1....1..1..0....1..0..0....0..1..1 %e A189068 ..1..0..0....1..0..1....1..1..1....0..1..1....0..0..1....1..0..0....0..1..1 %e A189068 ..1..1..1....1..1..1....1..1..1....1..0..0....1..0..1....0..0..1....0..0..0 %e A189068 ..1..1..0....1..0..0....1..1..1....0..0..1....0..0..0....1..0..0....0..1..1 %e A189068 ..1..0..0....1..0..0....0..1..1....0..0..0....0..0..0....1..0..0....1..0..0 %e A189068 ..0..1..1....0..0..1....0..1..1....1..0..1....1..0..1....1..0..0....0..0..0 %K A189068 nonn %O A189068 1,1 %A A189068 _R. H. Hardin_ Apr 16 2011