A299742 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 8, 179, 10150, 1502630, 564998177, 543386033722, 1345513136046507, 8547414034135997108

Offset

1,2

Comments

Diagonal of A299746.

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

Crossrefs

Cf. A299746.

Sequence in context: A159326 A089456 A298995 * A299662 A300255 A108552

Adjacent sequences: A299739 A299740 A299741 * A299743 A299744 A299745

Keyword

nonn

Author

R. H. Hardin, Feb 18 2018

Status

approved