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%I #5 Oct 02 2021 10:23:08
%S 1,6,1462,1584088,8616332520,71643177829872,1642669067898696816
%N Number of n X 4 arrays of permutations of 4 copies of 0..n-1 with no element plus any vertical neighbor equal to n-1.
%C Column 4 of A265863.
%e Some solutions for n=3
%e ..2..2..2..0....2..1..0..0....0..2..1..0....1..2..0..2....2..0..0..2
%e ..1..1..1..0....1..2..0..0....0..1..2..0....0..1..1..2....1..1..1..1
%e ..0..0..2..1....2..2..1..1....1..2..2..1....0..0..2..1....2..0..0..2
%Y Cf. A265863.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 17 2015