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Number of (n+1)X6 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero
1

%I #5 Mar 31 2012 12:37:03

%S 12241,219871,1912223,27234451,282748327,3677014705,41067117035,

%T 514372854783,5938466697393,73228672432163,859408349572671,

%U 10529539488838707,124718287347275147,1524137959225376351

%N Number of (n+1)X6 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero

%C Column 5 of A204876

%H R. H. Hardin, <a href="/A204873/b204873.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..3..2..0..2..3..3....0..3..0..3..2..2....2..2..1..2..1..3....0..1..0..1..2..1

%e ..3..0..3..2..0..2....2..1..2..0..2..1....0..2..1..2..1..1....2..2..2..0..2..0

%e ..1..2..3..0..3..2....2..2..2..3..2..2....2..2..1..2..1..3....1..0..1..1..1..1

%e ..3..0..3..2..3..0....2..1..2..0..2..1....0..2..1..2..1..1....2..2..0..2..0..2

%e ..0..2..3..0..3..2....2..2..2..3..0..3....2..2..1..2..1..3....1..0..1..1..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 20 2012