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%I #4 Aug 12 2016 07:05:18
%S 1,10,39,208,1576,14830,168500,2247280,34423760,596248800,11529957600,
%T 246360114000
%N Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any west neighbor modulo n and the upper left element equal to 0.
%C Column 3 of A267629.
%e Some solutions for n=4
%e ..0..1..2....0..1..2....0..1..2....0..0..0....0..0..1....0..1..2....0..0..1
%e ..0..1..1....0..1..1....3..0..1....1..1..1....0..1..2....0..1..2....1..2..3
%e ..2..3..3....2..2..3....3..3..0....2..2..2....1..2..3....3..0..1....3..0..1
%e ..2..3..0....3..3..0....1..2..2....3..3..3....2..3..3....2..3..3....2..2..3
%Y Cf. A267629.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 18 2016
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