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A203496 Number of 6Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.

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%I A203496 #6 Jul 22 2025 17:17:57
%S A203496 3,676,171068,56438584,20726134056,8496020082856
%N A203496 Number of 6Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.
%C A203496 Row 6 of A203491
%e A203496 Some solutions for n=5
%e A203496 ..2..1..2..2..0....1..0..0..1..2....0..1..0..2..0....2..1..0..2..1
%e A203496 ..0..1..2..2..2....1..0..1..0..2....1..2..0..0..0....2..2..1..1..0
%e A203496 ..2..1..1..1..2....2..2..0..0..0....1..1..0..0..1....1..1..0..2..2
%e A203496 ..1..1..1..2..2....1..0..2..1..0....2..1..0..0..0....2..0..0..2..2
%e A203496 ..1..2..1..2..1....1..2..0..0..1....0..2..1..0..0....1..2..2..0..1
%e A203496 ..1..2..2..2..0....1..1..0..2..0....2..0..0..1..0....1..1..2..0..2
%K A203496 nonn
%O A203496 1,1
%A A203496 _R. H. Hardin_ Jan 02 2012

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