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A239529 Number of (n+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

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%I A239529 #6 Jul 23 2025 10:59:48
%S A239529 1,2,216,11108,7199001,6976042240,39351464058085,559043719368109528
%N A239529 Number of (n+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.
%C A239529 Diagonal of A239537
%e A239529 Some solutions for n=4
%e A239529 ..0..1..2..1..0....0..1..0..2..0....0..1..0..0..1....0..1..1..0..2
%e A239529 ..0..1..2..1..0....0..1..0..2..0....0..1..0..0..1....0..1..1..0..2
%e A239529 ..0..2..0..0..1....0..1..2..2..1....2..0..2..2..0....1..0..2..0..1
%e A239529 ..1..2..0..0..1....0..2..2..0..1....2..0..2..2..0....1..0..2..2..1
%e A239529 ..1..2..0..0..1....0..2..2..0..1....2..0..2..2..0....1..0..2..2..1
%K A239529 nonn
%O A239529 1,2
%A A239529 _R. H. Hardin_, Mar 21 2014

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