A267267 Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, northeast or northwest neighbors modulo 6 and the upper left element equal to 0.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 41, 1769, 49639, 1458381, 37756241, 877748731, 18796891493

Offset

1,12

Comments

Row 6 of A267264.

Links

Table of n, a(n) for n=1..18.

Example

Some solutions for n=12
..0..0..5..5..4..4..3..3..2..2..2..1....0..1..1..1..2..2..3..3..4..4..5..5
..1..0..0..5..5..4..4..3..3..2..2..2....1..1..1..2..2..3..3..4..4..5..5..0
..1..1..0..0..5..5..4..4..3..3..2..2....1..1..2..2..3..3..4..4..5..5..0..0
..1..1..1..0..0..5..5..4..4..3..3..3....2..2..2..3..3..4..4..5..5..0..0..0
..2..1..1..1..0..0..5..5..4..4..3..3....2..2..3..3..4..4..5..5..0..0..0..1
..2..2..2..1..1..0..0..5..5..4..4..3....2..3..3..4..4..5..5..0..0..1..1..1

Crossrefs

Cf. A267264.

Sequence in context: A009985 A147521 A233070 * A049676 A275501 A275398

Adjacent sequences: A267264 A267265 A267266 * A267268 A267269 A267270

Keyword

nonn

Author

R. H. Hardin, Jan 12 2016

Status

approved