A299747 - OEIS

A299747

Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 8, 95, 1998, 115279, 9822603, 1686794332, 723176599097, 545447250355818

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

OFFSET

1,2

COMMENTS

Diagonal of A299753.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 18 2018

STATUS

approved