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%I #3 Dec 04 2015 07:07:08
%S 0,1,42,20592,20957398,38833756515,117650546564305,543403955513408885
%N Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no equal horizontal or antidiagonal neighbors and new values introduced sequentially from 0.
%C Column 4 of A265192.
%e Some solutions for n=4
%e ..0..1..2..1....0..1..0..2....0..1..2..1....0..1..0..1....0..1..2..3
%e ..3..1..0..3....3..1..0..3....2..0..3..2....2..1..0..2....0..3..1..2
%e ..2..3..0..2....2..3..1..3....3..0..3..1....3..2..3..2....1..3..0..3
%e ..0..3..1..2....2..0..1..2....1..0..3..2....3..0..1..3....2..1..2..0
%Y Cf. A265192.
%K nonn
%O 1,3
%A _R. H. Hardin_, Dec 04 2015
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