A267205 Number of 7 X n arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any north, southwest or northwest neighbors modulo 7 and the upper left element equal to 0.

1, 0, 0, 0, 0, 0, 1, 8, 166, 3947, 65391, 641925, 3883236, 16199181, 51863557, 143581930, 364054743, 934945647

Offset

1,8

Comments

Row 7 of A267197.

Links

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

Example

Some solutions for n=11
..0..1..2..2..3..3..4..5..5..6..0....0..0..1..1..2..3..3..4..4..5..6
..0..1..2..2..3..4..4..5..6..6..0....0..0..1..2..2..3..3..4..5..5..6
..0..1..2..2..3..4..4..5..6..6..0....0..0..1..2..2..3..4..4..5..6..6
..1..1..2..3..3..4..4..5..6..6..0....0..1..1..2..2..3..4..4..5..6..6
..1..1..2..3..3..4..5..5..6..6..0....0..1..1..2..3..3..4..5..5..6..6
..1..1..2..3..3..4..5..5..6..0..0....0..1..2..2..3..4..4..5..5..6..0
..1..2..2..3..4..4..5..5..6..0..1....1..1..2..3..3..4..5..5..6..6..0

Crossrefs

Cf. A267197.

Sequence in context: A033454 A181167 A205567 * A305096 A032395 A316756

Adjacent sequences: A267202 A267203 A267204 * A267206 A267207 A267208

Keyword

nonn

Author

R. H. Hardin, Jan 11 2016

Status

approved