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A317037 Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 14, 141, 6188, 393048, 302924053, 789775871803, 5059633703751332 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317043.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317043.

Sequence in context: A058072 A027304 A070135 * A317691 A067857 A027832

Adjacent sequences:  A317034 A317035 A317036 * A317038 A317039 A317040

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 19 2018

STATUS

approved

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)