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%I #5 Mar 31 2012 12:37:03
%S 2048,21380,157872,1438706,11643054,102186340,852866652,7401341360,
%T 62559638330,541098230290,4603000012148,39777249760844,
%U 339717186256760,2935286205895216,25139048468622558,217230974640825190
%N Number of (n+1)X6 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero
%C Column 5 of A204840
%H R. H. Hardin, <a href="/A204837/b204837.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..2..1..0..1..0..1....0..2..2..2..1..0....2..2..0..2..2..0....0..2..2..0..2..2
%e ..1..0..1..2..1..1....1..0..1..0..1..2....1..1..2..0..2..2....1..1..0..1..1..0
%e ..1..1..0..1..0..1....1..2..2..2..1..0....2..2..0..2..2..0....1..1..2..0..2..2
%e ..1..0..1..2..1..0....1..0..1..0..1..2....0..2..2..1..1..2....1..1..0..1..0..1
%e ..0..1..0..1..0..1....2..2..0..2..0..2....2..2..0..2..2..0....0..2..2..1..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 19 2012
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