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A299083 Number of nXn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. 0
1, 8, 92, 1617, 46456, 2001653, 129999453, 12899638332, 1967580379354 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299089.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299089.

Sequence in context: A113353 A081624 A298188 * A184142 A137159 A099291

Adjacent sequences:  A299080 A299081 A299082 * A299084 A299085 A299086

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 02 2018

STATUS

approved

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Last modified April 23 06:08 EDT 2019. Contains 322381 sequences. (Running on oeis4.)