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%I #6 Aug 12 2016 06:54:01
%S 6,1,1,1,1,1,1,5,27,147,716,3088,11526,39526,124957,373857,1064784,
%T 2933131,7873273,20899636,55550356,150499069,422235945,1241600062,
%U 3831289921,12297881055,40444127432,134225228520,444175261116
%N Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 4 and the upper left element equal to 0.
%C Row 4 of A267425.
%H R. H. Hardin, <a href="/A267426/b267426.txt">Table of n, a(n) for n = 1..41</a>
%e Some solutions for n=9
%e ..0..0..1..1..1..2..2..3..3....0..0..0..1..1..2..2..3..3
%e ..0..1..1..2..2..2..3..3..0....0..1..1..1..2..2..3..3..3
%e ..1..1..2..2..3..3..3..0..0....1..1..1..2..2..3..3..0..0
%e ..1..2..2..3..3..0..0..0..1....1..2..2..2..3..3..0..0..0
%Y Cf. A267425.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 14 2016