A298995 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

1, 8, 179, 10150, 1502511, 564821426, 543022804167, 1343983807513934, 8532605215407361244

Offset

1,2

Comments

Diagonal of A299001.

Links

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

Example

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

Crossrefs

Cf. A299001.

Sequence in context: A221115 A159326 A089456 * A299742 A299662 A300255

Adjacent sequences: A298992 A298993 A298994 * A298996 A298997 A298998

Keyword

nonn

Author

R. H. Hardin, Jan 31 2018

Status

approved