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Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west neighbor modulo n and the upper left element equal to 0.

0

`%I #4 Aug 12 2016 07:05:17
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`%S 1,1,39,8190,3264584,2357929910,2805027363620,5125417483461520,
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`%T 13647329614464753200
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`%N Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west neighbor modulo n and the upper left element equal to 0.
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`%C Column 3 of A266309.
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`%e Some solutions for n=4
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`%e ..0..3..3....0..2..1....0..0..3....0..2..2....0..2..2....0..3..1....0..0..2
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`%e ..1..1..3....1..3..3....0..3..2....3..1..3....3..1..3....1..0..3....3..3..2
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`%e ..2..0..2....0..0..2....1..1..1....0..2..1....1..1..0....2..2..0....1..3..2
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`%e ..2..1..0....1..3..2....3..2..2....0..3..1....0..3..2....3..2..1....1..1..0
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`%Y Cf. A266309.
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`%K nonn
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`%O 1,3
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`%A _R. H. Hardin_, Dec 26 2015
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