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A183540 Number of nX7 0..3 arrays with each element equal to either the sum mod 4 of its horizontal and vertical neighbors or the sum mod 4 of its diagonal and antidiagonal neighbors 0

%I

%S 73,3996,146315,12593728,299794777

%N Number of nX7 0..3 arrays with each element equal to either the sum mod 4 of its horizontal and vertical neighbors or the sum mod 4 of its diagonal and antidiagonal neighbors

%C Column 7 of A183541

%e Some solutions for 3X7

%e ..2..2..3..0..1..1..0....1..2..1..2..0..0..1....3..0..2..0..0..0..0

%e ..0..2..2..1..2..0..0....2..1..0..0..2..3..1....3..0..1..2..0..0..2

%e ..2..2..2..2..3..3..0....2..0..1..0..3..1..3....0..0..2..1..2..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011

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Last modified September 18 12:28 EDT 2020. Contains 337169 sequences. (Running on oeis4.)