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A267571 Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any west or southwest neighbors modulo 7 and the upper left element equal to 0. 0
720, 2, 3, 3, 8, 17, 2033, 279070, 27767384, 1883165721, 86034010064, 2749223521421 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A267562.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A267562.

Sequence in context: A167984 A267429 A317660 * A267287 A267746 A267026

Adjacent sequences:  A267568 A267569 A267570 * A267572 A267573 A267574

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2016

STATUS

approved

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Last modified September 24 17:17 EDT 2021. Contains 347651 sequences. (Running on oeis4.)