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A264953 Number of nX3 arrays containing 3 copies of 0..n-1 with no equal horizontal or vertical neighbors. 0
0, 2, 36, 10728, 4857120, 4099655520, 5589688315680, 11532215497783680 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A264954.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A264954.

Sequence in context: A060739 A333209 A224733 * A308942 A134366 A265944

Adjacent sequences:  A264950 A264951 A264952 * A264954 A264955 A264956

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2015

STATUS

approved

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Last modified September 24 09:10 EDT 2021. Contains 347630 sequences. (Running on oeis4.)