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%I #3 Oct 25 2012 08:35:44
%S 121,16289,2095233,268366049,34355128651,4397469258389,562876144341077
%N Hilltop maps: number of nX7 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..4 nX7 array
%C Column 7 of A218288
%e Some solutions for n=3
%e ..0..0..0..0..0..0..1....0..0..1..0..0..0..1....0..0..1..0..0..0..0
%e ..0..1..0..0..1..0..1....0..1..1..0..1..1..1....0..0..0..0..1..0..1
%e ..0..0..1..0..1..1..1....0..0..0..0..0..1..1....0..1..1..1..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 25 2012