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A267408 Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo 7 and the upper left element equal to 0. 0
1, 1, 1, 1, 1, 1, 2, 9, 222, 9469, 344458, 9785889, 224584539, 4264530811, 68776676697 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

Row 7 of A267401.

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=8

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

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

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

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

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

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

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

CROSSREFS

Cf. A267401.

Sequence in context: A217017 A112311 A067564 * A165797 A011823 A122894

Adjacent sequences:  A267405 A267406 A267407 * A267409 A267410 A267411

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2016

STATUS

approved

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Last modified August 7 12:19 EDT 2020. Contains 336276 sequences. (Running on oeis4.)