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A296718 Number of n X n 0..1 arrays with each 1 adjacent to 0, 2 or 4 king-move neighboring 1's. 0
2, 9, 69, 1463, 72533, 6829945, 1554755519, 795154816254, 873530688734201, 2176677611148751106, 12104489126392507688318 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A296725.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A296725.

Sequence in context: A121417 A232549 A284762 * A201862 A167016 A300014

Adjacent sequences:  A296715 A296716 A296717 * A296719 A296720 A296721

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2017

STATUS

approved

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Last modified October 22 22:02 EDT 2021. Contains 348180 sequences. (Running on oeis4.)