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%I #5 Dec 18 2015 18:18:36
%S 5,42,608,24158,2601925,833294380,816606210291,2510846575278844
%N Number of n X n 0..4 arrays of sums of 2X2 subblocks of some (n+1)X(n+1) binary array with rows and columns of the latter in lexicographically nondecreasing order
%C Diagonal of A226992
%e Some solutions for n=4
%e ..1..2..2..2....1..2..2..3....1..2..2..3....0..0..1..3....0..0..1..2
%e ..2..4..4..2....2..1..1..3....2..2..2..2....0..1..2..2....1..2..2..2
%e ..2..4..4..3....2..1..2..3....2..0..2..2....1..2..1..0....2..4..2..2
%e ..2..2..3..3....3..3..2..2....2..0..2..3....2..2..0..1....3..4..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2013
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