cp's OEIS Frontend

A189777 Number of nX7 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally.

%I A189777 #7 Jul 22 2025 11:54:26
%S A189777 97,9409,912673,48633913,2475199422,112831587094,5404382625660,
%T A189777 256681706358532,12454322928575313,600861626029136589,
%U A189777 29098233597048811000,1404753215113899124268,67882068723678010867189
%N A189777 Number of nX7 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally.
%C A189777 Column 7 of A189779
%H A189777 Ron Hardin, <a href="/A189777/b189777.txt">Table of n, a(n) for n = 1..155</a>
%e A189777 Some solutions for 5X7
%e A189777 ..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
%e A189777 ..1..1..1..0..0..0..0....0..0..0..0..0..0..0....1..0..1..0..0..0..0
%e A189777 ..1..0..1..1..0..0..0....1..1..1..1..1..0..0....1..1..1..0..0..0..0
%e A189777 ..1..1..1..0..0..0..0....0..0..0..0..0..0..0....1..0..1..0..0..0..0
%e A189777 ..1..1..1..1..0..0..0....1..1..1..0..1..0..0....0..0..0..0..0..0..0
%K A189777 nonn
%O A189777 1,1
%A A189777 _R. H. Hardin_ Apr 27 2011