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A266993 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west, northeast or northwest neighbor modulo n and the upper left element equal to 0. 0
1, 0, 2, 126, 67735, 45049091, 53041447974, 95667493395637 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A266994.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

..0..3..3....0..3..1....0..2..1....0..4..4....0..3..3....0..4..3....0..2..1

..1..0..3....1..4..2....0..4..1....1..4..1....0..2..0....4..3..2....2..4..1

..2..1..0....3..0..3....2..4..2....3..3..2....1..4..4....2..2..1....3..0..3

..1..4..4....0..2..2....3..0..4....3..2..1....1..4..2....1..1..0....4..2..4

..2..4..2....4..4..1....3..1..3....2..0..0....2..1..3....4..3..0....0..3..1

CROSSREFS

Cf. A266994.

Sequence in context: A237994 A157070 A064070 * A139904 A167414 A065381

Adjacent sequences:  A266990 A266991 A266992 * A266994 A266995 A266996

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 08 2016

STATUS

approved

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Last modified May 25 12:30 EDT 2019. Contains 323568 sequences. (Running on oeis4.)