A299734 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

1, 8, 220, 21111, 6896530, 7790212998, 30260326859957, 404132235613627376, 18556239226034408691425

Offset

1,2

Comments

Diagonal of A299740.

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

Crossrefs

Cf. A299740.

Sequence in context: A055350 A183261 A316954 * A006919 A179122 A300349

Adjacent sequences: A299731 A299732 A299733 * A299735 A299736 A299737

Keyword

nonn

Author

R. H. Hardin, Feb 18 2018

Status

approved