A267737 Number of nX3 arrays containing 3 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, 10, 17, 26, 45, 82, 157, 306, 605, 1202, 2397, 4786, 9565, 19122, 38237, 76466, 152925, 305842, 611677, 1223346, 2446685, 4893362, 9786717, 19573426, 39146845, 78293682, 156587357, 313174706, 626349405, 1252698802, 2505397597, 5010795186

Offset

1,2

Comments

Column 3 of A267742.

Links

R. H. Hardin, Table of n, a(n) for n = 1..191

Example

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

Crossrefs

Cf. A267742.

Sequence in context: A354472 A092599 A127853 * A188302 A190771 A034097

Adjacent sequences: A267734 A267735 A267736 * A267738 A267739 A267740

Keyword

nonn

Author

R. H. Hardin, Jan 20 2016

Status

approved