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Number of (n+1)X(n+1) 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing
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%I #5 Mar 31 2012 12:37:03

%S 16,277,12714,1442543,476276892,470866502871,1559031370472325

%N Number of (n+1)X(n+1) 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing

%C Diagonal of A204962

%e Some solutions for n=4

%e ..0..1..1..0..1....1..1..0..0..1....0..1..1..1..1....0..1..0..0..0

%e ..0..0..0..1..0....0..0..0..1..1....0..1..0..1..0....0..1..0..0..0

%e ..1..0..1..0..1....0..0..1..1..0....1..0..0..0..1....0..0..0..1..1

%e ..1..1..0..0..1....0..0..1..1..1....1..1..0..1..0....1..1..0..1..0

%e ..1..0..1..0..0....1..1..0..1..1....0..1..1..1..1....1..0..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 20 2012