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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.

A189342 Number of nX8 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally.

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%I A189342 #6 Jul 22 2025 11:43:14
%S A189342 181,32761,5929741,442969881,31177656076,1732402041622,
%T A189342 106150557957909,6190300153637745
%N A189342 Number of nX8 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally.
%C A189342 Column 8 of A189343
%e A189342 Some solutions for 4X8
%e A189342 ..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1....0..0..0..0..0..1..0..1
%e A189342 ..0..0..0..0..0..1..0..1....0..0..0..0..1..1..1..1....0..0..0..0..1..0..1..1
%e A189342 ..0..0..0..1..0..0..0..0....0..0..0..0..0..1..1..1....0..0..0..1..0..1..0..1
%e A189342 ..0..0..0..1..0..0..0..0....0..0..0..1..1..0..1..0....0..0..0..0..1..1..1..0
%K A189342 nonn
%O A189342 1,1
%A A189342 _R. H. Hardin_ Apr 20 2011

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