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 A231528 #6 Jul 23 2025 06:34:13 %S A231528 64,261,18721,571226,15000701,451200772,14940780666,476186342599, %T A231528 14723977144889,457772945684867,14379443320523238,451520043526895518, %U A231528 14134809455898239484,442341751627382776887,13854804160752439932243 %N A231528 Number of 6Xn 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. %C A231528 Row 6 of A231523 %H A231528 R. H. Hardin, <a href="/A231528/b231528.txt">Table of n, a(n) for n = 1..210</a> %e A231528 Some solutions for n=3 %e A231528 ..1..1..0....0..1..0....1..0..1....0..0..0....0..0..0....0..1..1....1..0..0 %e A231528 ..0..0..0....0..0..1....0..1..0....1..0..0....1..0..0....0..0..1....1..0..0 %e A231528 ..0..0..0....1..0..0....0..0..0....1..0..1....1..1..1....1..0..0....1..0..0 %e A231528 ..0..1..1....0..0..1....0..0..1....0..0..0....0..0..1....0..1..1....1..0..0 %e A231528 ..0..0..0....1..1..0....0..0..0....0..0..1....0..0..0....1..0..1....1..0..0 %e A231528 ..0..0..1....0..0..0....1..0..0....0..1..0....0..0..1....0..1..0....0..1..1 %K A231528 nonn %O A231528 1,1 %A A231528 _R. H. Hardin_, Nov 10 2013