A300176 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 8, 255, 32321, 16288960, 32640586945, 260070240849459, 8239275981240122104, 1037894641315598870418625, 519856344665932729699372254283, 1035331146709687346593709910443435692

Offset

1,2

Comments

Diagonal of A300182.

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

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

Crossrefs

Cf. A300182.

Sequence in context: A267250 A034674 A317511 * A291850 A130034 A128787

Adjacent sequences: A300173 A300174 A300175 * A300177 A300178 A300179

Keyword

nonn

Author

R. H. Hardin, Feb 27 2018

Status

approved