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A316797 Number of nXn 0..1 arrays with every element unequal to 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
0, 3, 8, 49, 792, 32193, 1964108, 268526785, 85266493095, 47424198471099 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A316801.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316801.

Sequence in context: A306598 A019015 A305217 * A000862 A306042 A194364

Adjacent sequences:  A316794 A316795 A316796 * A316798 A316799 A316800

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 14 2018

STATUS

approved

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Last modified April 22 15:47 EDT 2021. Contains 343177 sequences. (Running on oeis4.)