A297756 - OEIS

A297756

Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 4 neighboring 1's.

1, 2, 52, 1181, 109228, 59707529, 108229776807, 486950815286291, 7321785704464787533, 424569942925543143564742

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

OFFSET

1,2

COMMENTS

Diagonal of A297762.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 05 2018

STATUS

approved