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 A281769 #4 Jan 29 2017 12:43:51 %S A281769 0,38,201,1872,12191,85844,589990,3845590,25703392,166880128, %T A281769 1080273873,6965900750,44487321221,283503705456,1797488483677, %U A281769 11352536170284,71500155029453,448832589255878,2810514285498993,17557109431928644 %N A281769 Number of 5Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. %C A281769 Row 5 of A281765. %H A281769 R. H. Hardin, <a href="/A281769/b281769.txt">Table of n, a(n) for n = 1..210</a> %e A281769 Some solutions for n=4 %e A281769 ..0..0..0..0. .0..0..0..1. .0..1..1..1. .0..0..1..1. .0..0..1..1 %e A281769 ..1..1..1..1. .1..1..1..1. .0..0..1..0. .0..0..1..1. .0..0..1..1 %e A281769 ..1..1..1..1. .1..1..1..1. .0..0..0..1. .0..0..1..1. .0..0..1..1 %e A281769 ..0..0..1..1. .0..0..1..1. .0..0..1..0. .1..1..0..1. .1..1..0..0 %e A281769 ..0..0..1..1. .0..0..0..0. .1..1..0..1. .1..1..1..1. .1..0..0..0 %Y A281769 Cf. A281765. %K A281769 nonn %O A281769 1,2 %A A281769 _R. H. Hardin_, Jan 29 2017