A300261 - OEIS

A300261

Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 8, 95, 2030, 138215, 20341795, 6717267728, 6293324571337, 14961844070607631

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

OFFSET

1,2

COMMENTS

Diagonal of A300267.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 01 2018

STATUS

approved