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A299846 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 93, 1626, 46799, 2030211, 133388471, 13452150161, 2094291398899 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299852.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299852.

Sequence in context: A319176 A299034 A299339 * A214385 A121161 A098269

Adjacent sequences:  A299843 A299844 A299845 * A299847 A299848 A299849

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 20 2018

STATUS

approved

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Last modified October 6 04:36 EDT 2022. Contains 357261 sequences. (Running on oeis4.)