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 A189341 #7 Jul 22 2025 11:43:07 %S A189341 97,9409,912673,42069350,1857004061,68439605144,2739456017053, %T A189341 106150557957909,4311950202672542,172004809421325314, %U A189341 6968408164659864073,279225921295911354381,11255564881813924496670,451571763353227520521337 %N A189341 Number of nX7 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally. %C A189341 Column 7 of A189343 %H A189341 R. H. Hardin, <a href="/A189341/b189341.txt">Table of n, a(n) for n = 1..24</a> %e A189341 Some solutions for 4X7 %e A189341 ..0..0..0..1..1..1..1....0..0..0..1..0..1..0....0..0..0..0..0..0..0 %e A189341 ..0..0..0..0..1..1..0....0..0..0..1..0..1..1....0..0..0..1..0..1..0 %e A189341 ..0..0..0..1..0..1..0....0..0..0..0..1..1..0....0..0..0..1..1..1..1 %e A189341 ..0..0..1..0..1..0..0....0..0..0..1..0..1..1....0..0..1..0..1..0..0 %K A189341 nonn %O A189341 1,1 %A A189341 _R. H. Hardin_ Apr 20 2011