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 A231770 #6 Jul 23 2025 06:41:49 %S A231770 361,70927,2353156,71884125,3855664836,216545491864,9934984224361, %T A231770 448592877350499,21644127566241489,1051738505815977136, %U A231770 49914472444866670144,2363795427626479382800,112835392990992064829881 %N A231770 Number of (6+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal, diagonal and antidiagonal neighbors equal to one. %C A231770 Row 6 of A231764 %H A231770 R. H. Hardin, <a href="/A231770/b231770.txt">Table of n, a(n) for n = 1..210</a> %e A231770 Some solutions for n=2 %e A231770 ..0..0..1....0..0..1....1..0..0....0..0..0....0..0..0....1..0..0....1..1..0 %e A231770 ..0..0..1....0..1..1....0..0..1....1..0..0....1..0..1....0..1..0....1..0..0 %e A231770 ..1..0..0....0..0..1....1..0..0....0..0..0....0..1..1....0..0..0....0..0..1 %e A231770 ..0..0..1....0..0..0....0..1..0....1..1..0....0..0..0....0..0..0....0..1..1 %e A231770 ..0..0..0....0..0..0....0..0..1....1..0..0....0..0..1....1..0..1....0..0..1 %e A231770 ..1..0..0....0..0..0....1..0..0....0..0..1....0..0..1....0..0..1....0..0..0 %e A231770 ..1..0..0....1..0..0....1..0..0....0..1..0....1..1..0....0..0..0....0..0..0 %K A231770 nonn %O A231770 1,1 %A A231770 _R. H. Hardin_, Nov 13 2013