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 A232016 #8 Jul 23 2025 06:47:44 %S A232016 3,22,852,196196,266779524,1843879894941,65537195133679516, %T A232016 12236511620555899150414,12152563947065097047918908554, %U A232016 63842838047289027375275493667996131 %N A232016 Number of n X n 0..2 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors. %C A232016 Diagonal of A232023 %H A232016 R. H. Hardin, <a href="/A232016/b232016.txt">Table of n, a(n) for n = 1..13</a> %e A232016 Some solutions for n=4 %e A232016 ..0..0..0..0....1..0..0..1....2..0..0..1....1..0..0..0....0..0..0..0 %e A232016 ..1..1..0..1....0..0..2..0....0..0..0..0....0..1..2..2....1..0..0..2 %e A232016 ..0..0..0..0....2..2..0..0....0..2..0..0....1..1..1..1....0..0..2..1 %e A232016 ..0..0..0..0....2..2..1..1....2..0..0..2....1..1..2..2....0..2..1..1 %K A232016 nonn %O A232016 1,1 %A A232016 _R. H. Hardin_, Nov 17 2013