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 A222768 #6 Jul 23 2025 03:02:33 %S A222768 5,152,2446,89811,1570588,62017670,1139211468,46316300783, %T A222768 872037778022,36016907441620,687733392122744,28680675666813436, %U A222768 552611942013475560,23197864298620002960,449800925803708450740,18972874575715876051106 %N A222768 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order. %C A222768 Column 7 of A222769 %H A222768 R. H. Hardin, <a href="/A222768/b222768.txt">Table of n, a(n) for n = 1..105</a> %e A222768 Some solutions for n=3 %e A222768 ..0..0..0..1..0..1..1....0..0..0..1..1..1..0....0..0..1..1..1..0..0 %e A222768 ..0..0..0..0..1..0..0....1..1..1..1..1..1..1....0..0..1..0..0..0..0 %e A222768 ..0..0..0..0..0..0..0....0..1..1..1..1..1..1....0..0..1..0..0..0..0 %K A222768 nonn %O A222768 1,1 %A A222768 _R. H. Hardin_ Mar 05 2013