A267741 Number of nX7 arrays of permutations of 7 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, 1716, 3057, 18899, 114323, 649089, 3562990, 19473397, 106720862, 587093497, 3242425329, 17979553213, 100111504811, 559802224778, 3143926483262, 17734833870688, 100488091104948

Offset

1,2

Comments

Column 7 of A267742.

Links

Table of n, a(n) for n=1..17.

Example

Some solutions for n=4
..0..0..1..1..2..2..2....0..1..2..2..3..3..0....0..0..0..1..1..2..2
..1..2..2..2..3..3..0....1..2..3..0..0..1..2....1..1..1..1..2..3..3
..3..3..3..0..0..0..1....3..0..0..1..1..2..3....1..2..2..2..3..3..0
..3..3..0..1..1..1..2....1..1..2..2..3..3..0....2..3..3..3..0..0..0

Crossrefs

Cf. A267742.

Sequence in context: A347969 A267201 A024408 * A185795 A260474 A222343

Adjacent sequences: A267738 A267739 A267740 * A267742 A267743 A267744

Keyword

nonn

Author

R. H. Hardin, Jan 20 2016

Status

approved