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%I #5 Mar 31 2012 12:35:56
%S 86,260,9483,368326,91203410,55632308352
%N Number of (n+1)X(n+1) 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one
%C Diagonal of A184095
%e Some solutions for 4X4
%e ..0..1..1..2....1..2..3..3....1..2..2..3....1..1..2..2....1..1..2..2
%e ..1..0..1..0....1..3..0..2....2..2..2..2....1..2..0..2....1..3..0..2
%e ..1..1..2..0....1..3..2..3....2..2..2..3....2..0..3..0....2..1..3..1
%e ..2..0..0..1....2..3..0..2....2..2..3..1....3..0..1..0....2..3..0..3
%e ...
%e ...2..3..4.......7..8..8.......7..8..9.......5..5..6.......6..6..6...
%e ...3..4..3.......8..8..7.......8..8..9.......5..5..5.......7..7..6...
%e ...4..3..3.......9..8..7.......8..9..9.......5..4..4.......8..7..7...
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 09 2011
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