%I #5 Mar 31 2012 12:37:06
%S 15,833,302148,869874577,15852623627426,1606623426666766016,
%T 889483689986105362021688
%N Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order
%C Diagonal of A205440
%e Some solutions for n=4
%e ..0..0..0..0..0....0..1..0..1..0....0..1..1..0..0....0..0..0..0..1
%e ..0..1..0..1..0....0..0..0..0..0....1..1..0..0..1....0..1..0..1..1
%e ..0..1..0..0..0....3..0..2..0..2....0..0..0..1..1....0..0..0..0..1
%e ..0..0..0..3..0....3..0..0..0..0....0..1..0..0..0....0..3..3..0..1
%e ..1..0..3..3..3....3..3..3..3..3....1..1..0..2..2....3..3..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 27 2012
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