A267570 Number of 6 X n arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any west or southwest neighbors modulo 6 and the upper left element equal to 0.

120, 2, 3, 3, 8, 279, 15686, 711359, 21893719, 463755018, 7207021169, 87874269331, 889903537402

Offset

1,1

Comments

Row 6 of A267562.

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=6
..0..0..1..2..3..4....0..0..1..2..3..4....0..1..1..2..3..4....0..1..2..3..4..5
..0..1..1..2..3..4....0..1..1..2..3..4....0..0..1..2..3..4....1..1..2..3..4..5
..0..1..2..3..4..5....0..1..2..3..4..5....0..1..2..3..4..5....1..2..3..4..5..0
..0..1..2..3..4..5....1..2..3..4..5..5....1..2..3..4..5..5....1..2..3..4..5..0
..1..2..3..4..5..0....1..2..3..4..5..0....1..2..3..4..5..0....2..3..4..5..0..0
..2..3..4..5..5..5....2..3..4..5..5..0....2..3..4..5..5..0....2..3..4..5..0..1

Crossrefs

Cf. A267562.

Sequence in context: A156739 A326798 A090217 * A267286 A062829 A163598

Adjacent sequences: A267567 A267568 A267569 * A267571 A267572 A267573

Keyword

nonn

Author

R. H. Hardin, Jan 17 2016

Status

approved