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 A188564 #7 Jul 22 2025 11:16:12 %S A188564 44,1936,42712,1204078,33878337,924245906,25507294349,703601341153, %T A188564 19385833712450,534376376148754,14729728015524015,405999164002796680, %U A188564 11190832837280857035,308460516372631128792,8502292714849587051901 %N A188564 Number of nX6 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally. %C A188564 Column 6 of A188567 %H A188564 R. H. Hardin, <a href="/A188564/b188564.txt">Table of n, a(n) for n = 1..200</a> %e A188564 Some solutions for 3X6 %e A188564 ..0..0..1..0..0..0....0..0..1..0..1..1....0..0..0..0..0..1....1..0..0..1..1..0 %e A188564 ..0..1..0..1..1..0....1..0..0..1..0..1....1..1..0..1..0..1....0..0..0..1..0..0 %e A188564 ..1..0..0..0..0..0....0..1..1..0..0..0....0..0..1..0..0..0....0..1..0..0..0..0 %K A188564 nonn %O A188564 1,1 %A A188564 _R. H. Hardin_ Apr 04 2011