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A267833 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. 0
1, 10, 91, 924, 10924, 147340, 2247540, 38338680, 723997540, 15008679840, 339055348800 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A267836.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..0..0..3....0..3..1....0..0..1....0..1..2....0..2..3....0..0..1....0..3..1

..1..0..1....0..1..2....1..1..3....1..2..3....2..3..1....0..2..3....0..1..1

..1..2..2....1..2..2....2..3..2....2..3..0....0..2..0....2..3..1....2..2..2

..3..3..2....3..3..0....0..3..2....0..1..3....3..1..1....3..1..2....3..3..0

CROSSREFS

Cf. A267836.

Sequence in context: A015455 A110410 A051789 * A015467 A144783 A227512

Adjacent sequences:  A267830 A267831 A267832 * A267834 A267835 A267836

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2016

STATUS

approved

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Last modified April 8 08:54 EDT 2020. Contains 333313 sequences. (Running on oeis4.)