A299582 Number of n X n 0..1 arrays with every element equal to 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 4, 1, 84, 2170, 38420, 12345692, 5383097328, 3979108348246

Offset

1,2

Comments

Diagonal of A299588.

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Cf. A299588.

Sequence in context: A100864 A295178 A255192 * A211341 A280620 A262405

Adjacent sequences: A299579 A299580 A299581 * A299583 A299584 A299585

Keyword

nonn

Author

R. H. Hardin, Feb 13 2018

Status

approved