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%I #3 Dec 03 2015 11:03:21
%S 0,1,19,11223,10723968,19442592272,58092310437590,265923890299028745
%N Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.
%C Column 4 of A265170.
%e Some solutions for n=4
%e ..0..1..2..1....0..1..2..3....0..1..2..0....0..1..0..2....0..1..2..3
%e ..3..2..1..0....2..3..1..0....3..2..1..3....1..3..1..3....1..2..3..0
%e ..2..3..0..3....3..2..0..3....1..0..3..2....2..0..2..1....0..1..2..3
%e ..3..0..1..2....1..0..1..2....0..2..1..3....3..2..3..0....2..3..1..0
%Y Cf. A265170.
%K nonn
%O 1,3
%A _R. H. Hardin_, Dec 03 2015
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