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 A262848 #3 Oct 03 2015 16:10:27 %S A262848 4536,352880,17912392,661066920,26232879096,1007501698644, %T A262848 37291148287704,1391736921064152 %N A262848 Number of (n+2)X(6+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 A262848 Column 6 of A262849. %e A262848 Some solutions for n=1 %e A262848 ..1..1..0..1..1..0..0..1....1..0..0..1..1..0..1..0....0..0..1..0..1..0..1..0 %e A262848 ..0..0..0..0..1..1..1..0....0..0..0..0..0..0..0..0....1..1..1..1..0..1..0..1 %e A262848 ..0..1..1..1..0..0..0..0....1..1..1..1..0..1..0..1....1..0..0..0..1..1..0..0 %Y A262848 Cf. A262849. %K A262848 nonn %O A262848 1,1 %A A262848 _R. H. Hardin_, Oct 03 2015