A299367 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

0, 4, 130, 10692, 3216110, 3330673422, 11808073517522, 143714747245855583, 6004323638946405219444

Offset

1,2

Comments

Diagonal of A299373.

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

Crossrefs

Cf. A299373.

Sequence in context: A001425 A050284 A096759 * A299931 A006103 A209012

Adjacent sequences: A299364 A299365 A299366 * A299368 A299369 A299370

Keyword

nonn

Author

R. H. Hardin, Feb 08 2018

Status

approved