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A266454 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element 1 greater than its north neighbor modulo n and the upper left element equal to 0. 0
1, 3, 357, 442285, 1548940233, 12959331192279, 218375094825289861 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A266455.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A266455.

Sequence in context: A157591 A005336 A062226 * A288948 A297483 A324402

Adjacent sequences:  A266451 A266452 A266453 * A266455 A266456 A266457

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2015

STATUS

approved

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Last modified August 22 20:47 EDT 2019. Contains 326209 sequences. (Running on oeis4.)