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A298913 Number of n X n 0..1 arrays with every element equal to 0, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 1, 1, 3, 7, 14, 40, 168, 873, 5632, 63538, 1026354, 20200595, 622554839, 29122695476, 1747360635695, 149225079090933 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Diagonal of A298917.

LINKS

Table of n, a(n) for n=1..17.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298917.

Sequence in context: A147006 A146936 A184264 * A266019 A146155 A106363

Adjacent sequences:  A298910 A298911 A298912 * A298914 A298915 A298916

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2018

STATUS

approved

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Last modified June 18 11:58 EDT 2021. Contains 345098 sequences. (Running on oeis4.)