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A265868 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1. 0
1, 4, 340, 56496, 28645840, 20091622560, 29056095714720, 52981034285587200, 165795456023776938240 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A265870.
LINKS
EXAMPLE
Some solutions for n=4
..2..3..0....0..0..3....3..3..2....3..1..2....1..3..0....3..3..0....0..1..0
..1..1..3....2..1..1....2..2..1....1..0..1....2..2..1....3..2..1....3..2..1
..1..2..2....3..3..2....0..1..3....0..3..0....3..1..2....2..1..1....3..0..3
..3..0..0....1..2..0....0..1..0....2..2..3....0..0..3....0..0..2....2..2..1
CROSSREFS
Cf. A265870.
Sequence in context: A352657 A173367 A214161 * A239293 A295997 A090086
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2015
STATUS
approved

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Last modified May 17 19:53 EDT 2024. Contains 372607 sequences. (Running on oeis4.)