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A295710 Number of nXn 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 2 or 4 1s. 0
2, 16, 385, 31985, 9056598, 8705322572, 28373170135641, 313669710008734662, 11762368573382093623080, 1496099103269907922278909905, 645462222454558476245469903282979 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A295716.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A295716.

Sequence in context: A052737 A002474 A172149 * A012390 A009613 A012388

Adjacent sequences:  A295707 A295708 A295709 * A295711 A295712 A295713

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2017

STATUS

approved

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Last modified April 4 07:32 EDT 2020. Contains 333213 sequences. (Running on oeis4.)