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A295246 Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1's. 0
2, 11, 183, 8271, 1081924, 403318354, 430246838462, 1312008367581053, 11440395910000265070, 285225326541505567932583, 20332459513033508982984463884 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A295253.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A295253.

Sequence in context: A297601 A089760 A288556 * A288564 A295646 A124836

Adjacent sequences:  A295243 A295244 A295245 * A295247 A295248 A295249

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 18 2017

STATUS

approved

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Last modified May 29 05:00 EDT 2022. Contains 354122 sequences. (Running on oeis4.)