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A204783 Number of (n+1)X(n+1) 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero 0

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

%S 3871,224843,5719981,7174463023,720594943717

%N Number of (n+1)X(n+1) 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero

%C Diagonal of A204791

%e Some solutions for n=4

%e ..2..3..0..3..4....4..5..2..4..0....2..2..5..1..2....3..5..6..2..2

%e ..3..3..5..3..1....4..0..4..2..5....3..2..0..2..6....2..0..2..1..4

%e ..5..0..5..0..5....1..5..2..4..0....2..2..5..0..5....3..5..6..2..2

%e ..7..3..2..3..4....3..5..2..6..5....3..2..0..2..3....2..0..2..1..4

%e ..5..0..5..0..5....1..5..2..4..0....5..0..5..2..2....6..5..6..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 19 2012

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)