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%I #4 Aug 12 2016 07:05:19
%S 1,10,91,924,10924,147340,2247540,38338680,723997540,15008679840,
%T 339055348800
%N Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any northeast neighbor modulo n and the upper left element equal to 0.
%C Column 3 of A267836.
%e Some solutions for n=4
%e ..0..0..3....0..3..1....0..0..1....0..1..2....0..2..3....0..0..1....0..3..1
%e ..1..0..1....0..1..2....1..1..3....1..2..3....2..3..1....0..2..3....0..1..1
%e ..1..2..2....1..2..2....2..3..2....2..3..0....0..2..0....2..3..1....2..2..2
%e ..3..3..2....3..3..0....0..3..2....0..1..3....3..1..1....3..1..2....3..3..0
%Y Cf. A267836.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 21 2016