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 A222767 #6 Jul 23 2025 03:02:24 %S A222767 4,73,934,15077,256546,4479721,79612578,1432512703,26011740182, %T A222767 475591230143,8742929996332,161434491485598,2991759796200596, %U A222767 55616288265939185,1036645299974444114,19366819201445345894 %N A222767 Number of nX6 0..1 arrays with exactly floor(nX6/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order. %C A222767 Column 6 of A222769 %H A222767 R. H. Hardin, <a href="/A222767/b222767.txt">Table of n, a(n) for n = 1..152</a> %e A222767 Some solutions for n=3 %e A222767 ..0..1..0..0..0..0....0..1..1..1..0..0....0..1..1..1..0..0....0..0..0..0..1..0 %e A222767 ..1..1..0..0..0..0....1..1..1..1..0..0....1..1..0..0..0..0....0..0..0..0..1..1 %e A222767 ..1..1..1..0..0..0....1..1..1..1..0..1....0..1..0..0..0..0....0..1..1..1..1..1 %K A222767 nonn %O A222767 1,1 %A A222767 _R. H. Hardin_ Mar 05 2013