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 A302068 #6 Mar 31 2018 15:49:51 %S A302068 64,2778,89658,3247765,119508742,4418931065,163660519064, %T A302068 6065045335103,224815724811979,8334107796606201,308963355935563199, %U A302068 11454095498949273706,424636110620978141873,15742508225166053482704 %N A302068 Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. %C A302068 Column 7 of A302069. %H A302068 R. H. Hardin, <a href="/A302068/b302068.txt">Table of n, a(n) for n = 1..210</a> %H A302068 R. H. Hardin, <a href="/A302068/a302068.txt">Empirical recurrence of order 53</a> %F A302068 Empirical recurrence of order 53 (see link above) %e A302068 Some solutions for n=5 %e A302068 ..0..1..0..0..1..1..0. .0..1..0..0..1..0..1. .0..1..0..0..1..1..0 %e A302068 ..0..0..0..1..0..1..1. .0..0..0..0..1..0..1. .0..0..0..1..0..1..1 %e A302068 ..0..1..0..0..0..0..1. .0..0..0..1..1..0..0. .0..1..0..0..1..0..0 %e A302068 ..0..0..0..1..1..0..1. .0..1..0..1..0..1..0. .0..1..1..0..1..1..0 %e A302068 ..0..1..0..0..0..1..0. .1..0..1..1..0..1..1. .0..1..1..0..0..0..1 %Y A302068 Cf. A302069. %K A302068 nonn %O A302068 1,1 %A A302068 _R. H. Hardin_, Mar 31 2018