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Number of 5Xn arrays containing n copies of 0..5-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.
0

%I #5 Aug 12 2016 06:53:58

%S 1,186,40476,10723968,3152470670,995141926013,330443561580215,

%T 113954535526102076,40466434693734970267

%N Number of 5Xn arrays containing n copies of 0..5-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.

%C Row 5 of A265170.

%e Some solutions for n=3

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

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

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

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

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

%Y Cf. A265170.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 03 2015