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A296123 Number of n X n 0..1 arrays with each 1 adjacent to 2 or 5 king-move neighboring 1's. 0
1, 5, 18, 74, 2098, 54286, 1810441, 227074899, 41069612676, 11999602459480, 8460640112181759, 10489963059013433653 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A296128.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A296128.

Sequence in context: A183443 A034551 A052926 * A242054 A027134 A227451

Adjacent sequences:  A296120 A296121 A296122 * A296124 A296125 A296126

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 05 2017

STATUS

approved

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Last modified July 29 12:40 EDT 2021. Contains 346346 sequences. (Running on oeis4.)