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A296967 Number of n X n 0..1 arrays with each 1 adjacent to 2, 4 or 5 king-move neighboring 1's. 0
1, 5, 31, 274, 13543, 1154298, 222799447, 143300513381, 227497889396792 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A296974.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A296974.

Sequence in context: A259787 A273601 A218679 * A292462 A340392 A176302

Adjacent sequences:  A296964 A296965 A296966 * A296968 A296969 A296970

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 22 2017

STATUS

approved

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Last modified July 23 22:20 EDT 2021. Contains 346265 sequences. (Running on oeis4.)