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%I #6 Dec 18 2015 18:17:55
%S 0,9,111,7799,2446147,3762507339,28456420346436
%N Number of n X n 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor
%C Diagonal of A201539
%e Some solutions for n=4
%e ..0..0..0..1....0..1..1..1....0..0..0..0....0..0..2..2....0..0..0..2
%e ..0..0..0..1....0..1..2..2....0..1..2..2....0..0..2..2....0..1..2..2
%e ..0..0..0..1....0..1..2..2....0..1..2..2....1..1..2..2....2..1..1..1
%e ..0..0..1..1....2..2..2..2....1..1..2..2....2..2..1..1....2..2..2..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Dec 02 2011
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