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 A280068 #4 Dec 25 2016 06:41:02 %S A280068 8,41,281,2157,17468,145485,1188839,9934415,83159859,698377561, %T A280068 5887978374,49721599049,420447933252,3558743911515,30138816610398, %U A280068 255354080222866,2164080579680386,18343719103540772,155508281837894034 %N A280068 Number of nX7 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. %C A280068 Column 7 of A280069. %H A280068 R. H. Hardin, <a href="/A280068/b280068.txt">Table of n, a(n) for n = 1..210</a> %e A280068 Some solutions for n=4 %e A280068 ..0..0..0..0..0..0..1. .0..0..1..1..0..1..1. .0..0..0..0..0..0..0 %e A280068 ..0..0..0..0..0..1..1. .0..0..1..0..0..1..1. .0..0..0..0..0..0..0 %e A280068 ..0..0..0..1..1..1..0. .0..1..1..0..0..0..0. .0..0..0..1..1..0..0 %e A280068 ..0..0..1..1..1..0..0. .1..1..0..0..0..0..0. .0..0..1..1..1..0..0 %Y A280068 Cf. A280069. %K A280068 nonn %O A280068 1,1 %A A280068 _R. H. Hardin_, Dec 25 2016