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 A269088 #4 Feb 19 2016 09:23:42 %S A269088 72,1127,18590,268289,3761534,50865307,673690710,8768989835, %T A269088 112658396453,1431998499913,18044145807959,225714076389625, %U A269088 2806025783464923,34698719581599414,427098528675334433,5235801241750340793 %N A269088 Number of nX7 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once. %C A269088 Column 7 of A269089. %H A269088 R. H. Hardin, <a href="/A269088/b269088.txt">Table of n, a(n) for n = 1..210</a> %H A269088 R. H. Hardin, <a href="/A269088/a269088.txt">Empirical recurrence of order 68</a> %F A269088 Empirical recurrence of order 68 (see link above) %e A269088 Some solutions for n=3 %e A269088 ..0..0..0..0..1..0..0. .1..0..0..0..0..1..0. .0..1..0..1..0..0..0 %e A269088 ..0..0..0..0..0..1..1. .0..0..0..0..0..0..0. .0..0..1..0..1..0..0 %e A269088 ..0..0..0..0..0..0..0. .1..0..0..0..1..0..0. .0..0..0..0..0..1..0 %Y A269088 Cf. A269089. %K A269088 nonn %O A269088 1,1 %A A269088 _R. H. Hardin_, Feb 19 2016