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 A188565 #7 Jul 22 2025 11:16:20 %S A188565 81,6561,237116,11433452,550371695,25507294349,1199747927824, %T A188565 56394861720488,2646119200975135,124263900074691604, %U A188565 5835027374030395082,273966247390359990893,12864061918841330330771,604024661760799430803651 %N A188565 Number of nX7 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally. %C A188565 Column 7 of A188567 %H A188565 R. H. Hardin, <a href="/A188565/b188565.txt">Table of n, a(n) for n = 1..200</a> %e A188565 Some solutions for 3X7 %e A188565 ..0..0..0..1..0..0..0....0..0..0..0..0..0..1....0..0..1..0..1..0..1 %e A188565 ..0..0..1..0..1..1..0....0..0..0..0..1..0..0....0..0..1..0..0..1..0 %e A188565 ..1..0..1..0..0..0..0....0..0..1..0..1..1..0....1..1..0..0..0..1..0 %K A188565 nonn %O A188565 1,1 %A A188565 _R. H. Hardin_ Apr 04 2011