A316298 - OEIS

A316298

Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 4, 20, 114, 1519, 20780, 608947, 26898537, 2095245767, 277347563288

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

OFFSET

1,2

COMMENTS

Diagonal of A316304.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 29 2018

STATUS

approved