A299075 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

1, 8, 163, 8245, 1055999, 325878090, 250915355467, 482492338693115, 2293605474526180949

Offset

1,2

Comments

Diagonal of A299081.

Links

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

Example

Some solutions for n=4
..0..1..0..1. .0..1..1..0. .0..0..0..0. .0..1..0..1. .0..0..0..0
..0..1..1..1. .1..1..1..1. .1..1..1..1. .0..0..0..1. .1..0..0..1
..0..1..1..1. .1..1..1..1. .0..1..1..0. .0..0..0..1. .0..0..0..0
..0..1..0..1. .0..1..1..0. .1..1..1..1. .0..1..0..1. .1..1..1..1

Crossrefs

Cf. A299081.

Sequence in context: A025606 A224899 A281830 * A299840 A353777 A230916

Adjacent sequences: A299072 A299073 A299074 * A299076 A299077 A299078

Keyword

nonn

Author

R. H. Hardin, Feb 02 2018

Status

approved