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A207807 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

%I A207807 #7 Jul 22 2025 20:51:43
%S A207807 42,1764,14946,209050,2485392,31431114,388134978,4829044276,
%T A207807 59932307050,744575694026,9247079324448,114855785954414,
%U A207807 1426522758927058,17717786782797060,220058305703080950,2733176728894351270
%N A207807 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 0 1 vertically.
%C A207807 Column 7 of A207808
%H A207807 R. H. Hardin, <a href="/A207807/b207807.txt">Table of n, a(n) for n = 1..210</a>
%e A207807 Some solutions for n=4
%e A207807 ..1..0..1..0..1..1..1....0..1..0..1..0..1..0....1..0..1..1..0..1..0
%e A207807 ..0..1..1..0..1..1..1....1..0..1..0..1..1..0....0..1..1..1..0..1..0
%e A207807 ..0..1..1..0..1..1..1....1..0..1..0..1..0..1....0..1..0..1..1..0..1
%e A207807 ..1..0..1..0..1..1..0....1..0..1..0..1..0..1....0..1..0..1..1..0..1
%K A207807 nonn
%O A207807 1,1
%A A207807 _R. H. Hardin_ Feb 20 2012