A299575 - OEIS

A299575

Number of n X n 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 1, 10, 19, 172, 2597, 61273, 6245870, 1821672943, 1399272048339

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

OFFSET

1,3

COMMENTS

Diagonal of A299581.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 13 2018

STATUS

approved