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A303015 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 960, 5571, 79945, 970892, 9976891, 121524556, 1423906011, 16163776349, 190207010302, 2214124343835, 25650137255305, 299401227197388, 3483898291886107, 40523476862477296, 472073705798224700 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A303016.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..0..1..1..1..0..1..1. .0..1..0..1..0..1..0. .0..1..0..0..0..1..0

..0..1..0..1..0..1..0. .0..0..0..0..1..0..0. .0..1..0..1..0..1..0

..0..1..0..0..0..1..0. .0..1..0..1..1..1..0. .0..1..0..1..0..0..0

..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .0..1..0..1..0..1..0

..1..1..0..1..1..1..0. .0..1..1..1..0..0..0. .0..1..0..1..1..1..0

CROSSREFS

Cf. A303016.

Sequence in context: A265620 A253133 A302321 * A302819 A303512 A000818

Adjacent sequences:  A303012 A303013 A303014 * A303016 A303017 A303018

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 17 2018

STATUS

approved

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Last modified October 28 06:41 EDT 2021. Contains 348316 sequences. (Running on oeis4.)