A299445 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 4, 1, 21, 231, 211, 6326, 174794, 665961, 84553473, 4512663317

Offset

1,2

Comments

Diagonal of A299451.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=5
..0..0..0..1..1. .0..1..1..1..0. .0..1..1..1..0. .0..0..1..1..1
..1..1..0..0..0. .0..1..1..1..0. .1..0..1..0..1. .0..0..1..1..1
..0..0..0..0..0. .1..1..1..1..1. .1..1..1..1..1. .1..1..1..1..1
..0..0..0..1..1. .1..0..1..0..1. .1..0..1..1..0. .1..1..1..0..0
..1..1..0..0..0. .0..1..1..1..0. .0..1..1..0..1. .1..1..1..0..0

Crossrefs

Cf. A299451.

Sequence in context: A364760 A142472 A360089 * A135049 A113384 A243663

Adjacent sequences: A299442 A299443 A299444 * A299446 A299447 A299448

Keyword

nonn

Author

R. H. Hardin, Feb 10 2018

Status

approved