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A203495 Number of 5Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.

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%I A203495 #6 Jul 22 2025 17:17:50
%S A203495 3,256,25002,3065704,421158558,61706303456,9532999874792
%N A203495 Number of 5Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.
%C A203495 Row 5 of A203491
%e A203495 Some solutions for n=5
%e A203495 ..1..1..2..0..1....1..0..0..0..0....0..2..2..2..1....1..2..2..1..0
%e A203495 ..2..1..2..0..0....1..0..0..0..0....0..1..2..2..2....0..1..1..2..2
%e A203495 ..0..2..2..0..1....1..0..0..0..0....2..2..2..0..1....1..2..2..0..1
%e A203495 ..1..0..1..1..2....0..0..0..0..1....0..1..2..2..2....1..1..1..1..2
%e A203495 ..2..0..1..2..0....0..0..1..0..0....0..2..2..1..2....0..1..2..1..2
%K A203495 nonn
%O A203495 1,1
%A A203495 _R. H. Hardin_ Jan 02 2012

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