A267407 Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo 6 and the upper left element equal to 0.

1, 1, 1, 1, 1, 2, 8, 132, 2814, 52005, 763414, 9421283, 98242523, 900233946, 7350615882, 54646192398, 374607339026

Offset

1,6

Comments

Row 6 of A267401.

Links

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

Example

Some solutions for n=8
..0..1..2..3..3..3..4..5....0..0..0..1..2..3..4..5....0..0..1..2..3..4..5..5
..0..1..2..3..4..4..4..5....0..1..1..1..2..3..4..5....0..0..1..2..3..4..5..5
..1..1..2..3..4..5..5..5....0..1..2..2..2..3..4..5....1..1..1..2..3..4..5..0
..1..1..2..3..4..5..0..0....0..1..2..3..3..3..4..5....1..2..2..2..3..4..5..0
..1..2..2..3..4..5..0..0....0..1..2..3..4..4..4..5....1..2..3..3..3..4..5..0
..1..2..2..3..4..5..0..0....0..1..2..3..4..5..5..5....1..2..3..4..4..4..5..0

Crossrefs

Cf. A267401.

Sequence in context: A274171 A184945 A058343 * A337296 A111827 A045330

Adjacent sequences: A267404 A267405 A267406 * A267408 A267409 A267410

Keyword

nonn

Author

R. H. Hardin, Jan 13 2016

Status

approved