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A204868 Number of (n+1)X(n+1) 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero 6

%I

%S 207,3167,53311,4256141,282748327,94493071327,24583374827519,

%T 34898804015036761,36258417235170928699

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

%C Diagonal of A204876

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 20 2012

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Last modified October 28 13:26 EDT 2021. Contains 348329 sequences. (Running on oeis4.)