A298502 - OEIS

A298502

Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

1, 5, 10, 269, 10969, 1091801, 364785216, 269830709761, 511150044413047

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

OFFSET

1,2

COMMENTS

Diagonal of A298508.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2018

STATUS

approved