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%I #5 Mar 31 2012 12:36:06
%S 2066505,2974946682,4813465754996,8185872059408158,
%T 14077041692560748494,23991605690718487651365,
%U 40128119810449322920431346,65662514004587268399842833783
%N Number of (n+2)X(n+2) 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
%C Diagonal of A186915
%e Some solutions for 4X4
%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
%e ..1..1..1..4....0..0..3..5....0..0..3..6....0..1..2..4....0..1..1..3
%e ..3..4..6..6....5..6..0..6....1..5..3..6....4..6..1..0....0..1..4..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 28 2011