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A265239 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no equal antidiagonal neighbors and new values introduced sequentially from 0. 0
1, 8, 888, 359172, 327847656, 559450092072, 1595319525849600, 7039355228926588752, 45427065106451676216288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A265241.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A265241.

Sequence in context: A262379 A175411 A027725 * A290023 A112578 A112579

Adjacent sequences:  A265236 A265237 A265238 * A265240 A265241 A265242

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 06 2015

STATUS

approved

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Last modified May 27 02:41 EDT 2022. Contains 354093 sequences. (Running on oeis4.)