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A181020 Maximum number of 1s in an nX(n+1) binary matrix with no three 1s adjacent in a line along a row, column or diagonally.

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%I A181020 #7 Dec 11 2020 09:57:47
%S A181020 2,4,7,12,17,23,30,38,47,58
%N A181020 Maximum number of 1s in an nX(n+1) binary matrix with no three 1s adjacent in a line along a row, column or diagonally.
%e A181020 Some solutions for 6X7
%e A181020 ..1..0..1..0..1..0..1....1..0..1..0..1..0..1....1..0..1..0..1..0..1
%e A181020 ..0..0..1..1..0..1..1....0..0..1..1..0..1..1....0..0..1..1..0..1..1
%e A181020 ..1..1..0..1..0..1..0....1..1..0..1..0..1..0....1..1..0..1..0..1..0
%e A181020 ..0..0..1..0..0..0..1....0..1..1..0..0..0..1....0..1..1..0..0..0..1
%e A181020 ..1..0..1..0..1..1..0....1..0..0..0..1..1..0....1..0..0..0..1..1..0
%e A181020 ..1..1..0..1..0..1..1....1..1..0..1..0..1..1....1..0..1..1..0..1..1
%Y A181020 Superdiagonal 1 of A181019.
%K A181020 nonn,more
%O A181020 1,1
%A A181020 _R. H. Hardin_, Sep 30 2010

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