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Number of (n+1)X4 0..3 matrices with each 2X2 permanent equal
1

%I #4 Apr 21 2013 17:55:42

%S 3067,110253,1417535,49673755,946613919,27297398415,603337019865,

%T 15860938451645,372644358301661,9417695286715489,227009613149696909,

%U 5642600777843854363,137487699278896205027,3393605739680529203023

%N Number of (n+1)X4 0..3 matrices with each 2X2 permanent equal

%C Column 3 of A224975

%H R. H. Hardin, <a href="/A224970/b224970.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 21 2013