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A267287 Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo 7 and the upper left element equal to 0. 0
720, 4, 4, 40, 8724, 315356, 4893787, 55479601, 912215513 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A267278.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

..0..5..2..0....0..5..2..0....0..4..1..4....0..4..2..5....0..5..1..6

..4..1..6..3....4..1..6..3....3..0..4..1....3..1..5..3....4..1..5..2

..1..5..2..0....1..5..2..6....6..3..0..4....0..4..2..6....0..4..2..6

..4..2..6..3....4..1..5..3....2..6..3..0....3..1..5..2....3..1..5..3

..1..5..3..6....0..4..2..6....5..2..6..3....0..4..1..6....0..4..2..6

..4..2..6..4....3..1..5..3....1..5..2..6....3..0..5..2....3..1..5..3

..1..5..3..0....0..4..2..6....5..1..5..2....6..4..1..6....0..4..2..6

CROSSREFS

Cf. A267278.

Sequence in context: A267429 A317660 A267571 * A267746 A267026 A145226

Adjacent sequences:  A267284 A267285 A267286 * A267288 A267289 A267290

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2016

STATUS

approved

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Last modified September 28 05:33 EDT 2020. Contains 337392 sequences. (Running on oeis4.)