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 A231698 #6 Jul 23 2025 06:37:57 %S A231698 422,94996,37872601,14007173906,4333974317355,1383168339985798, %T A231698 458723384178436491,151028533752547571008,49335557302876746551356, %U A231698 16145864650820204721710388,5292025656827127971428710436 %N A231698 Number of nX6 0..3 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors. %C A231698 Column 6 of A231700 %H A231698 R. H. Hardin, <a href="/A231698/b231698.txt">Table of n, a(n) for n = 1..70</a> %e A231698 Some solutions for n=2 %e A231698 ..0..0..0..0..0..0....1..0..0..3..0..0....0..0..0..0..2..1....3..0..1..2..3..3 %e A231698 ..1..2..1..1..0..1....1..0..0..3..0..1....1..3..0..2..1..1....0..0..3..2..2..2 %K A231698 nonn %O A231698 1,1 %A A231698 _R. H. Hardin_, Nov 12 2013