A298134 - OEIS

A298134

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

0, 1, 0, 10, 88, 917, 14422, 467043, 17828062, 1081228309

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

OFFSET

1,4

COMMENTS

Diagonal of A298139.

LINKS

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2018

STATUS

approved