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A265420 Number of nX3 arrays containing 3 copies of 0..n-1 with no equal horizontal, vertical, diagonal or antidiagonal neighbors and new values introduced sequentially from 0. 0
0, 0, 0, 1, 225, 86226, 25009492, 8099337021, 3096486423133, 1412534036530778 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Column 3 of A265421.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=6

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

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

..5..1..3....5..1..2....1..0..5....5..2..5....0..1..0....2..1..2....2..5..0

..4..2..5....3..4..3....4..3..1....1..0..4....5..4..5....4..3..5....4..3..1

..5..3..1....5..2..5....5..2..5....4..2..1....3..2..3....5..1..0....5..0..5

..0..4..2....0..4..1....3..0..4....3..0..5....5..1..4....0..4..5....4..2..1

CROSSREFS

Cf. A265421.

Sequence in context: A036428 A183822 A260864 * A171109 A239478 A304314

Adjacent sequences:  A265417 A265418 A265419 * A265421 A265422 A265423

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 08 2015

STATUS

approved

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Last modified August 3 13:59 EDT 2021. Contains 346438 sequences. (Running on oeis4.)