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 A281718 #4 Jan 28 2017 13:48:31 %S A281718 8,6,14,97,294,1410,5781,23798,103034,429701,1822286,7734672,32650303, %T A281718 138610834,587182558,2488856940,10558553240,44771374413,189944049261, %U A281718 805892553288,3419413103710,14511303192013,61585052285760 %N A281718 Number of 4Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. %C A281718 Row 4 of A281715. %H A281718 R. H. Hardin, <a href="/A281718/b281718.txt">Table of n, a(n) for n = 1..210</a> %H A281718 R. H. Hardin, <a href="/A281718/a281718.txt">Empirical recurrence of order 72</a> %F A281718 Empirical recurrence of order 72 (see link above) %e A281718 Some solutions for n=4 %e A281718 ..0..1..0..1. .0..1..1..1. .0..0..0..1. .0..1..0..0. .0..0..0..0 %e A281718 ..1..0..1..0. .1..0..0..0. .0..0..1..0. .1..0..1..0. .0..0..1..1 %e A281718 ..0..1..0..1. .1..1..0..0. .0..1..0..1. .0..1..0..1. .1..1..1..1 %e A281718 ..1..0..1..1. .1..1..1..0. .1..0..1..1. .1..0..1..0. .1..1..1..1 %Y A281718 Cf. A281715. %K A281718 nonn %O A281718 1,1 %A A281718 _R. H. Hardin_, Jan 28 2017