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A187960 Half the number of (n+2)X7 binary arrays with no 3X3 subblock having a sum equal to any horizontal or vertical neighbor 3X3 subblock sum 0

%I

%S 240064,2092928,16890700,124421880,1218772461,11568061339,98476432408,

%T 907622916436

%N Half the number of (n+2)X7 binary arrays with no 3X3 subblock having a sum equal to any horizontal or vertical neighbor 3X3 subblock sum

%C Column 5 of A187964

%e Some solutions for 4X7 with a(1,1)=0

%e ..0..0..1..1..1..1..1....0..0..0..1..0..0..0....0..0..1..0..1..1..0

%e ..0..0..0..1..0..1..1....0..0..0..1..1..1..0....0..0..0..0..0..1..0

%e ..0..0..0..1..0..1..0....0..0..0..1..0..1..1....0..0..0..1..1..1..0

%e ..0..0..0..0..1..0..0....0..0..1..1..1..0..0....0..0..0..0..0..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 16 2011

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Last modified February 4 02:26 EST 2023. Contains 360045 sequences. (Running on oeis4.)