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, 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

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: A078819 A189554 A351095 * A219806 A095958 A244057

Adjacent sequences: A267735 A267736 A267737 * A267739 A267740 A267741

Keyword

nonn

Author

R. H. Hardin, Jan 20 2016

Status

approved