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 A189263 #7 Jul 22 2025 11:38:55 %S A189263 88,7744,293495,10113920,319000548,9918543104,305860450896, %T A189263 9421503162646,290030885325044,8927631449810010,274794811549580572, %U A189263 8458248128908576878,260346492261595728516,8013524717628350193612,246658279999619171732736 %N A189263 Number of nX8 binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally. %C A189263 Column 8 of A189264 %H A189263 R. H. Hardin, <a href="/A189263/b189263.txt">Table of n, a(n) for n = 1..200</a> %e A189263 Some solutions for 8X3 %e A189263 ..0..0..0....0..0..0....0..1..0....0..1..0....0..1..1....0..0..1....0..0..1 %e A189263 ..1..1..1....1..1..1....0..1..1....1..0..1....1..1..1....1..1..0....1..1..1 %e A189263 ..1..1..1....1..1..1....0..1..0....0..1..0....0..1..1....0..0..1....1..1..1 %e A189263 ..1..1..1....1..0..1....0..1..1....1..0..1....1..1..1....1..1..1....0..0..1 %e A189263 ..0..0..1....1..1..1....0..1..1....0..1..0....0..0..1....0..0..1....1..1..1 %e A189263 ..1..1..1....0..0..0....0..1..0....0..0..0....1..1..1....1..1..0....1..1..0 %e A189263 ..0..1..0....1..1..0....0..1..0....0..1..0....1..1..0....0..1..0....0..1..1 %e A189263 ..1..1..1....1..1..0....0..1..0....0..0..0....1..1..1....0..0..0....1..0..0 %K A189263 nonn %O A189263 1,1 %A A189263 _R. H. Hardin_ Apr 19 2011