A295345 - OEIS

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A295345

Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 3 1's.

2, 8, 76, 1877, 123783, 22091007, 11500075769, 17390584281932, 75403580062034596, 925132781374075718095, 31778302417345693041196311

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A295352.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A295352.

Sequence in context: A002668 A193205 A303943 * A329968 A093062 A057984

Adjacent sequences: A295342 A295343 A295344 * A295346 A295347 A295348

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2017

STATUS

approved