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 A262853 #4 Oct 03 2015 16:14:18 %S A262853 54,396,5184,420654,14762016,661066920,35819485902,1848763876932, %T A262853 97674093333720,5273363053187598,283250082728896200, %U A262853 15255186777350855280,823762481842229569614,44454274055540034471036,2399751878355335217728304 %N A262853 Number of (4+2)X(n+2) 0..1 arrays with each row divisible by 7 and column not divisible by 7, read as a binary number with top and left being the most significant bits. %C A262853 Row 4 of A262849. %H A262853 R. H. Hardin, <a href="/A262853/b262853.txt">Table of n, a(n) for n = 1..210</a> %e A262853 Some solutions for n=3 %e A262853 ..1..1..1..0..0....0..0..1..1..1....0..1..1..1..0....0..0..1..1..1 %e A262853 ..0..0..1..1..1....0..0..0..0..0....1..1..1..0..0....1..0..1..0..1 %e A262853 ..0..0..1..1..1....0..0..1..1..1....0..0..0..0..0....0..0..0..0..0 %e A262853 ..0..0..0..0..0....0..0..0..0..0....0..1..1..1..0....0..0..1..1..1 %e A262853 ..0..1..1..1..0....1..1..1..0..0....0..0..1..1..1....0..1..1..1..0 %e A262853 ..0..0..1..1..1....1..1..1..0..0....1..0..1..0..1....0..1..1..1..0 %Y A262853 Cf. A262849. %K A262853 nonn %O A262853 1,1 %A A262853 _R. H. Hardin_, Oct 03 2015