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 A280179 #4 Dec 28 2016 07:03:18 %S A280179 15,656,13720,202693,2665301,31821879,359880117,3910652938, %T A280179 41205820599,424186764568,4286516071132,42663698232264, %U A280179 419306557225259,4077141776062489,39281413060768999,375445083262145664 %N A280179 Number of nX7 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. %C A280179 Column 7 of A280180. %H A280179 R. H. Hardin, <a href="/A280179/b280179.txt">Table of n, a(n) for n = 1..210</a> %e A280179 Some solutions for n=3 %e A280179 ..0..0..0..1..1..0..0. .0..0..0..0..1..1..1. .0..0..0..0..0..1..1 %e A280179 ..0..0..1..1..1..0..1. .0..0..0..0..1..1..1. .0..0..1..1..0..1..1 %e A280179 ..0..0..0..0..0..1..1. .1..0..0..0..0..0..1. .1..1..1..0..0..1..1 %Y A280179 Cf. A280180. %K A280179 nonn %O A280179 1,1 %A A280179 _R. H. Hardin_, Dec 28 2016