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A267738 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0. 1
1, 35, 57, 123, 249, 502, 1008, 2020, 4044, 8092, 16188, 32380, 64764, 129532, 259068, 518140, 1036284, 2072572, 4145148, 8290300, 16580604, 33161212, 66322428, 132644860, 265289724, 530579452, 1061158908, 2122317820, 4244635644 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A267742.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A267742.

Sequence in context: A242291 A078819 A189554 * A219806 A095958 A244057

Adjacent sequences:  A267735 A267736 A267737 * A267739 A267740 A267741

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2016

STATUS

approved

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Last modified December 5 08:36 EST 2021. Contains 349543 sequences. (Running on oeis4.)