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A300261 Number of nXn 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 95, 2030, 138215, 20341795, 6717267728, 6293324571337, 14961844070607631 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A300267.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300267.

Sequence in context: A003775 A262737 A299747 * A121785 A305587 A229294

Adjacent sequences:  A300258 A300259 A300260 * A300262 A300263 A300264

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 01 2018

STATUS

approved

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Last modified April 24 18:03 EDT 2019. Contains 322430 sequences. (Running on oeis4.)