A317267 - OEIS

A317267

Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 4, 13, 498, 31878, 3234635, 1396521994, 1165304769027, 2212187815200032

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

OFFSET

1,2

COMMENTS

Diagonal of A317271.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 25 2018

STATUS

approved