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 A262914 #4 Oct 04 2015 10:12:12 %S A262914 1,22,99,853,18190,152587,2045269,42299374,727767387,13958567845, %T A262914 286835405806,5764350599731,117817168320181,2437382604831502, %U A262914 50489841095677539,1050381458044863253,21936143744564786830 %N A262914 Number of (n+1)X(5+1) 0..1 arrays with each row divisible by 3 and each column divisible by 7, read as a binary number with top and left being the most significant bits. %C A262914 Column 5 of A262917. %H A262914 R. H. Hardin, <a href="/A262914/b262914.txt">Table of n, a(n) for n = 1..210</a> %e A262914 Some solutions for n=4 %e A262914 ..1..1..0..0..0..0....0..0..1..0..0..1....1..0..1..1..0..1....1..0..1..0..1..0 %e A262914 ..1..1..1..1..0..0....1..0..0..1..1..1....1..0..0..1..0..0....1..0..1..0..1..0 %e A262914 ..1..1..1..1..0..0....1..1..1..1..1..1....1..1..1..1..1..1....1..0..1..0..1..0 %e A262914 ..0..0..1..1..0..0....1..1..0..1..1..0....0..1..0..0..1..0....0..0..0..0..0..0 %e A262914 ..0..0..0..0..0..0....0..1..1..0..0..0....0..1..1..0..1..1....0..0..0..0..0..0 %Y A262914 Cf. A262917. %K A262914 nonn %O A262914 1,2 %A A262914 _R. H. Hardin_, Oct 04 2015