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 A232053 #6 Jul 23 2025 06:50:46 %S A232053 128,1897,76375,2821630,109609484,4041385884,149582129861, %T A232053 5552015655928,206648804986252,7686854135374938,285774694751524522, %U A232053 10622849743170463135,394905834596870476755,14681395159518123754045 %N A232053 Number of 7Xn 0..1 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors. %C A232053 Row 7 of A232047 %H A232053 R. H. Hardin, <a href="/A232053/b232053.txt">Table of n, a(n) for n = 1..210</a> %e A232053 Some solutions for n=3 %e A232053 ..0..0..0....1..0..0....0..0..1....1..0..0....1..1..0....0..0..0....1..1..0 %e A232053 ..1..0..0....0..0..0....0..1..1....0..0..0....0..0..0....0..0..1....0..0..1 %e A232053 ..0..0..1....0..1..1....1..1..1....0..0..0....0..1..0....0..1..1....0..1..0 %e A232053 ..0..0..1....1..1..1....1..1..1....1..1..0....1..0..0....0..0..0....0..0..0 %e A232053 ..0..0..0....1..0..0....1..0..0....0..0..0....0..1..1....0..1..1....0..0..0 %e A232053 ..0..0..0....0..1..1....0..1..0....1..1..1....1..1..1....1..0..0....0..0..0 %e A232053 ..1..0..0....1..1..1....0..0..0....1..1..1....0..0..0....0..0..1....0..0..0 %K A232053 nonn %O A232053 1,1 %A A232053 _R. H. Hardin_, Nov 17 2013