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%I #7 Jan 27 2013 02:36:39
%S 324576,6019798,111211414,1919555447,21242244160,235234097572,
%T 2571152951156,20663923742904,166164319255080
%N Number of (n+2)X7 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.
%C Column 5 of A186840
%e Some solutions for 4X7
%e ..0..0..0..0..0..1..0....0..0..0..0..0..0..0....0..0..0..0..1..1..0
%e ..0..0..0..0..0..1..0....0..0..1..1..1..0..0....0..0..0..0..0..1..0
%e ..0..0..1..0..0..1..0....0..0..0..0..1..1..1....0..0..1..0..0..1..1
%e ..0..0..0..1..1..1..1....0..0..1..0..0..1..0....0..0..1..0..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 27 2011