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A298958 Number of nXn 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
0, 1, 1, 7, 31, 360, 4263, 101720, 3172536, 169440015, 12802881385, 1552491730921 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Diagonal of A298963.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298963.

Sequence in context: A221875 A143564 A253596 * A153028 A276667 A322894

Adjacent sequences:  A298955 A298956 A298957 * A298959 A298960 A298961

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2018

STATUS

approved

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)