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Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4
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%I #5 Dec 18 2015 18:18:49

%S 3,41,2739,996325,1916936295,19230047618078,1009453455314170147,

%T 277622934845789537083432,399900776405405212831407783271

%N Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4

%C Diagonal of A239047

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 09 2014