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%I #6 Dec 18 2015 18:17:57
%S 1,680,9509536,4062408076312,83625724607330716008,
%T 81642366196089406720417732740
%N Number of n X n 0..7 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor
%C Diagonal of A202916
%e Some solutions for n=4
%e ..1..7..2..5....2..5..1..1....5..2..5..1....5..4..6..1....2..7..7..3
%e ..1..7..1..5....4..7..6..2....5..4..5..1....5..3..7..7....5..2..7..0
%e ..4..2..0..3....7..7..4..5....3..3..1..2....7..3..6..1....5..7..6..3
%e ..4..0..2..2....6..0..0..5....4..4..2..2....7..1..3..0....1..7..2..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Dec 26 2011