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A318213 Number of nX7 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
8, 102, 329, 2321, 20502, 155972, 1122773, 8679924, 65844976, 507320695, 3880082075, 29828690068, 228795498352, 1756171508386, 13486852207318, 103512846881063, 794948107621166, 6103334633903798, 46863181424234369 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A318214.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318214.

Sequence in context: A317862 A318551 A307461 * A001575 A328061 A305603

Adjacent sequences:  A318210 A318211 A318212 * A318214 A318215 A318216

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 21 2018

STATUS

approved

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Last modified May 7 19:09 EDT 2021. Contains 343652 sequences. (Running on oeis4.)