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%I #5 Mar 31 2012 12:37:03
%S 56,524,7070,247108,11643054,1289881302,204749436552,73036201343336,
%T 38899944310300258,45302488265102707276,80802524916380070655310
%N Number of (n+1)X(n+1) 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero
%C Diagonal of A204840
%e Some solutions for n=4
%e ..1..0..1..2..1....0..2..1..2..1....2..2..2..1..0....2..1..0..1..2
%e ..2..2..0..2..0....1..2..0..2..0....0..1..0..1..2....1..0..1..0..1
%e ..0..1..1..1..1....0..2..1..2..1....2..0..2..0..2....1..1..2..1..0
%e ..2..2..0..2..0....1..2..0..2..0....1..1..1..1..0....1..0..1..0..1
%e ..1..0..1..1..1....1..0..1..2..1....1..1..1..1..2....1..1..2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 19 2012
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